meiosis occurs during all of the following exceptmeiosis occurs during all of the following except

Why do polar bodies form? Females are short with a broad chest and widely spaced nipples. If the diploid number of chromosomes for an organism is 52, what will the haploid number of chromosomes be? E) telophase I, During which stage of meiosis do the homologous chromosomes separate? What process is occurring in the figure? Males provide more genes in sperm than females provide in eggs. B) They orient the sperm toward the egg. b) homologous pairs separate during meiosis I. c) one cell produces four cells. About 90 percent of a cell's time in the normal cell cycle may be spent in interphase. Meiosis occurs during all of the following EXCEPT Primary nondisjunction occurs during meiosis II when the sister chromatids fail to separate and both daughter chromosomes go in the same gamete. B) The gametes are the diploid phase of the life cycle. During ________, the homologous chromosome pairs independently align themselves at the equator of the cell. Describe how errors in chromosome structure occur through inversions and translocations. D. It is the first stage of mitosis. Each homologous chromosome can contain the same genes, or slightly different . A. crossing over in Prophase I of meiosis B. independent assortment in Metaphase I of meiosis C. fertilization D. All of the choices are sources of genetic variation. a. growth of the organism and tissue repair B. species Y should have a better chance of surviving than species X. C. species X should have a better chance of surviving than species Y. D. neither species should have an advantage in surviving since organisms often become extinct when the environment changes. 8 C. 12 D. 16 E. 24. Chromosome disorders can be divided into two categories: abnormalities in chromosome number and chromosome structural rearrangements. luteinizing hormone (LH) triggers ovulation in females. Which of the following would not contribute to genetic variation? (a). A) gamete production. After ttt seconds, an object dropped from rest falls a distance d=16t2d=16 t^2d=16t2, where ddd is measured in feet and 2t52 \leq t \leq 52t5. Disorders of chromosome number include the duplication or loss of entire chromosomes, as well as changes in the number of complete sets of chromosomes. Discuss the epidemiology of poliomyelitis, rabies, and arboviral encephalitis, including mode of transmission, etiology, and disease symptoms. Which of the following is/are true about sexual reproduction? Aneuploidy is a change in the number of chromosomes resulting from nondisjunction during meiosis. In meiosis, the daughter cells are genetically identical. Meiosis produces four haploid daughter cells, includes two nuclear division and the formation of bivalents. 10+ million students use Quizplus to study and prepare for their homework, quizzes and exams through 20m+ questions in 300k quizzes. it can be used to generate new spermatogonia. Answer to: What is the key difference between mitosis and meiosis? B. Meiosis stops after meiosis I and does not proceed to meiosis II. A. two haploid gametes fuse to form a diploid cell. synapsis occurs during prophase I. A. independent assortment B. metaphase C. anaphase II D. mitosis, If the diploid number of chromosomes for an organism is 52, what will the haploid number of chromosomes be? (1) Property of producing large number of seeds. Encircle the letter of your choice. During which stage of meiosis does crossing over occur? A) another name for an egg cell. Meiosis occurs during all of the following EXCEPT A. gametogenesis. A. deletion B. duplication C. translocation D. aneuploidy. can nonreciprocal translocation be balanced, an even exchange of material with no genetic information extra or missing, and ideally full functionality, where the exchange of chromosome material is unequal resulting in extra or missing genes. At the end of anaphase 1, each chromosomeis composed of to chromatids and at the end of anaphase 11, sister chromatids have separated. Tags: Question 28 . Meiosis is a type of cell division in sexually reproducing organisms that reduces the number of chromosomes in gametes (the sex cells, or egg and sperm). D) growth and repair. The haploid cell products of meiosis II fuse. A. prophase I B. metaphase II C. anaphase II D. prophase II E. metaphase I, At which stage of meiosis is each chromosome composed of a single chromatid? B. reduction of chromosome number (from 2N to N). A lattice holds the members of a bivalent together in such a way that the RNA of the nonsister chromatids is aligned. Down syndrome, Which of the following conditions results from a Robertsonian translocation? At pachytene they pair, the corresponding portions of . They allow a reduction in chromosomes while preserving most of the cytoplasm for one egg. Extra copies of sex chromosomes are more easily tolerated in humans than extra copies of autosomes. A. Homologs fail to separate during meiosis I. C) spermatogenesis. Which of the following is NOT a difference between anaphase I and anaphase II? What change(s) from regular meiosis (in preparation for fertilization) would be required to produce this system? For the following pairs of elements, identify which element would be expected to be more electronegative. in the human male, sperm cells are produced in the..and are supported by the . is involved in a negative feedback relationship with the anterior pituitary and hypothalamus to regulate testosterone levels, A male accessory organ of the reproductive system that often becomes enlarged, infected, or cancerous in older men is. In meiosis, there are four daughter cells. E) the period between meiosis I and meiosis II, During which stage of meiosis are the bivalents arranged along the equator of the spindle? The risk of nondisjunction increases with the age of . There is a species of desert lizard where only females are known to exist-there are no males known. down syndrome with ______________________, ____________ results in the mildest symptoms, a small amount of amniotic fluid, which contains fetal tissues, is sampled from the amniotic sac, A tiny tissue sample is taken from the villi of the chorion, Which has a higher miscarriage rate, CVS or amniocentesis, Which test can be done sooner, CVS or amniocentesis, principles of fetal trisomy 21 testing from a maternal blood sample using DNA sequencing, Partial translocations in what disorder allow us to map locations of parts of the disorder. a. the chromosome copies attach to the plasma membrane and are pulled apart by cell growth 48 C. 112 D. 24, Which of the following statements is correct about the chromosomal position during mitosis and meiosis? Which of the following events does not occur during telophase. Include units in your answer. a nonfunctional cell rudiment formed at the same time as an egg cell. The gametes are the diploid phase of the life cycle. Find f(x)f (x)f(x) and V(x, y). Ed Reschke/Photolibrary/Getty Images. 4. To what does the term chiasma refer? B) metaphase II To what does the term chiasma refer? True or False, Interkinesis follows.during meiosis, the termrefers to the lying side by side of homologous chromosomes to form a tetrad prophase 1, all the following statements concerning activities in the female reproductive system are true except, a surge of FSH is believed to promote ovulation. It is not true that anaphase I occurs in a haploid cell while anaphase II occurs in a diploid cell. E) Homologous chromosomes interact with the spindle as if they were one chromosome. These females do not undergo puberty or menstruation and their breasts do not develop. D. egg cell. E. None of the choices are sources of genetic variation. A. prophase I B. metaphase II C. anaphase II D. prophase II E. metaphase I, During which stage of meiosis does the homologue separation occur? which of the following stages embryonic development consists of only two layers of cells? After meiosis II, each spermatid would have 16 chromosomes. While meiosis certainly evolved from mitosis itself, the former had acquired few novel steps that are distinct from the latter: pairing of the homologous chromosomes, recombination between non-sister . During metaphase I of meiosis the duplicated chromosomes are at the metaphase plate while during metaphase of mitosis the bivalents are present at the metaphase plate C. During metaphase of mitosis the homologues separate while during metaphase I of meiosis the sister chromatids separate D. During metaphase I of meiosis the homologues separate while during metaphase of mitosis the sister chromatids separate, During which phase of mitosis and meiosis will the state of the chromosome be the same? E) Neither A, B, or C. All of the above involve mitosis. the inclusion of the centromere in the inversion, Which of the following terms can be used to describe Down syndrome? A) prophase I d. only A and B are correct. A. Anaphase II and Anaphase B. Prophase II and Prophase C. Metaphase I and Metaphase D. Telophase I and Telophase. Which statement is NOT true about homologues in meiosis I? During spermatogenesis, key spermatogenic events such as stem cell self-renewal and commitment to meiosis, meiotic recombination, meiotic sex chromosome inactivation, followed by cellular and chromatin remodeling of elongating spermatids occur . c. a fertilized egg is known as a zygote 3 B. Is modified post-fertilizaion to block polyspermy. B) structures that hold the chromosomes in alignment on the metaphase plate The polar body is . B) Interkinesis is the stage that precedes a prophase stage. Which of the following accurately describes a possible meiotic nondisjunction event? E)Neither A,B,or C.All of the above involve mitosis. Crossing over occurs more often in the formation of sperm than in eggs. c. the cell may have damaged DNA and need to undergo apoptosis. A) prophase I This is extra chromosomal material representing the X chromosome in each female cell. It is only during Metaphase II and Metaphase that the state of the chromosomes is the same. b. the production of gametes is known as gametogensis e. only B and C are correct. D) Interkinesis can be variable in length. Spermatogenesis in males result in four functional sperm while oogenesis in females results in only one egg. Describe how errors in chromosome structure occur through inversions and translocations. Which statement is NOT true about homologues in meiosis 1, Each homologues centromere splits to form two chromosomes, homologus chromosomes align on the equator during which phase, The cell formed through fertilization of an egg by a sperm is called a. Which of the following is a true statement concerning meiosis in males and females? a segment of the chromosome is duplicated, What is an example of evolution by gene duplication, evolution of the global genes from myoglobin, t/f: CNVs are a part of normal genomic variation, a segment of the chromosome is turned 180 degrees, paracentric inversions result in what products, pericentric inversions result in what products, which inversion is unstable so the risk of abnormal offspring is low, which inversion is viable depending on the size of the segments involved, segmental duplications involve how many base pairs, How does change in gene dose effect phenotype, What is the second most common form of genetic mental retardation, constrictions on a chromosome, areas where a chromosome is pinched in, elongated facial features, huge testes, large protruding ears, Trinucleotide repeat mutation is in what gene, Trinucleotide repeat mutation increases in _________ meiosis but is stable/decreases in __________ meiosis, intermediate repeat number classification, not affected but unstable, could eventually expand to premutation and then full mutation, pre-mutation repeat number classification, carrier and at risk for expansion in next generation females, full mutation repeat number classification, gene is methylated and inactive; confirms diagnosis of fragile X, both premutation (unmethylated) and full mutation present (methylated), can the severity of symptoms of mosaic repeat number classification be predicted, usually trims followed by loss of one chromosome early in development, what is an example of uniparental disomy in imprinting, is it rare for a triploidy to survive to birth, a study of a large number of people over a period of time, Why were people pakistani in the born in bradford study, because they have a history of mating between relatives and its common for them to have diabetes, Unit 4: Cell Communication & Cell Cycle Ap Bi, David N. Shier, Jackie L. Butler, Ricki Lewis, John David Jackson, Patricia Meglich, Robert Mathis, Sean Valentine, WSU Bio 107 Section 3 Pre-Exam and Daily Quiz. Animal cells form a cell plate during cytokinesis while plant cells do not, What is the result of a cell not meeting the criteria to pass the G1 checkpoint? D. spermatogenesis. B) a precursor cell that becomes an egg cell. 2. There is one chance in 23 of getting identical sets of chromosomes from one parent , times two because there are two parents ; therefore , two siblings out of 46 will be identical except for the extent of crossing - over . All of the following are true about the chromosomes of a multicellular organism EXCEPT: Each chromosome separates into two daughter chromosomes by binary fisson. sperm and egg are reproductive cells that are collectively referred to as, which term refers to the failure of homologous chromosomes to separate during meiosis, crossing over occurs between the two sister chromatids of a homologue It should not be necessary to look at a table of actual electronegativity values. Aneuploidy is a change in the number of chromosomes resulting from nondisjunction during meiosis. 1.Two haploid gametes fuse to form a diploid cell, 2.Homologous chromosomes separate from one another during meiosis I, 3.One diploid cell produces four haploid cells, 4.Sister chromatids separate from one another during meiosis II A) species X and Y will have an equal chance of surviving. The interphase is subdivided into {eq}\rm G_1 {/eq} phase, {eq}\rm S {/eq} phase, and {eq}\rm G_2 {/eq} phase. Answer the following questions concerning the following figure It increases the likelihood that daughter cells contain different genetic material. If a cell contains 12 chromosomes at the end of meiosis I, how many chromosomes will the daughter cells contain at the end of meiosis II? D. Homologues exchange genetic material between non-sister chromatids. One main reason would be: A. Homologous chromosomes are similar in all of these characteristics EXCEPT. body parts being shaped and patterned into a specific form. In metaphase individual chromosomes (pairs of chromatids) line up along the equator; During anaphase the sister chromatids are separated to opposite poles A change in the chromosome number resulting from nondisjunction is called euploidy. Today we know that. Sketch a graph of the function and the secant line through PPP and QQQ. C. The products of the haploid phase of the life cycle are larger than those of the diploid phase. Which of the following events occurs during prophase I but does not occur during prophase of mitosis? C) the process of crossing-over It is nevertheless necessary for two females to court and for one to assume the posture of a male to stimulate the female to produce eggs. Why is crossing-over important? D similar in shape and location of the centromere. carry the same alleles for all traits. In meiosis, the reduction from 2n to n is accomplished by sister chromatids splitting apart and migrating to opposite daughter cells. During metaphase of mitosis the duplicated chromosomes are at the metaphase plate while during metaphase I of meiosis the bivalents are present at the metaphase plate. A) prophase I C. This switch in mating behavior is the direct physical reflection of crossing-over. Which of the following normally results from meiosis in a human cell that contains 46 chromosomes? Which statement does not accurately describe what occurs during the process of meiosis? Which statement is NOT true about homologues in meiosis I? D) A, B, and C all involve meiosis. ; In most cases, cytokinesis (the division of the cytoplasm) occurs at the same time as telophase I.; At the end of telophase I and cytokinesis, two . A. Interkinesis occurs after a cell finishes a nuclear division. A. Suppose that k1=6,k2=4,b1=2k_1=6, k_2=4, b_1=2k1=6,k2=4,b1=2, and b2=1b_2=1b2=1. The mechanics of meiosis II is similar to mitosis, except that each dividing cell has only one set of homologous chromosomes. During which stage of grief do people make a promise to change if what was lost can be returned? All of the following events occur during normal meiosis except _______. Which of the following statements is true about the life cycle of animals? T/F: Females with only one X chromosome do not develop; this condition is lethal. C) two nuclear divisions Which of the following accurately describe anaphase 1 and anaphase 11? d) the resulting cells contain 23 chromosomes. Meiosis is the process by which gametes are produced. It is nevertheless necessary for two females to court and for one to assume the posture of a male to stimulate the female to produce eggs. a. the cell cycle halts Jacobs Syndrome, XYY, results from nondisjunction during spermatogenesis. Both mitosis and meiosis result in daughter cells identical to the parent cells. The overall function of meiosis includes all of the following EXCEPT A. gamete production. answer choices. 6. What might prevent a cell from passing the G1 checkpoint? In meiosis, the daughter cells are genetically identical. the primitive streak occurs in the morula stage of the embryonic development. All of the following are true concerning Down Syndrome EXCEPT A. it is caused by autosomal trisomy 21 B. in 23% of cases, the sperm contributes the extra chromosome C. it is the most common trisomy in humans D. chances of a woman having a child with Down Syndrome decreases with her age, The correct number of chromosomes in a species is known as aneuploidy. HD, Pair the disease with its chromosomal abnormality Identify which event will occur during Prophase I of meiosis but does not occur during prophase of mitosis. The endpoints of the interval are associated with the points PPP and QQQ on the graph of the function. All of the choices are sources of genetic variation. Sister chromatids line up and separate into individual chromosomes. Interphase involves DNA replication and interkinesis does not. b.) B) oogenesis. c.) the nuclear envelope disappears. C) providing genetic variation in sexually reproducing organisms. In telophase I of meiosis, the following events occur: The spindle fibers continue to move the homologous chromosomes to the poles. Which of the following errors most likely produces this condition? C) crossing-over B. Triploid and aneuploid There is a species of desert lizard that is entirely female. C. zygote. Is designed to receive only sperm from the same species. Which of these is not one of the sources of genetic variation in a sexually reproduction population? Consider that all other relevant characteristics are similar between these species. c. CH3COOH\text{CH}_{3}\text{COOH}CH3COOH and NaCH3COO\text{NaCH}_{3}\text{COO}NaCH3COO. All of the following are true for meiosis EXCEPT *. A. Cytokinesis Meiosis occurs in the primordial germ cells, cells specified for sexual reproduction and separate from the body's normal somatic cells. C) It produces the proteins that are associated with DNA in chromosomes. Dogs have 39 chromosome pairs. D. Just like in mitosis, during prophase, DNA condensation occurs, the nuclear envelope and nucleoli disappear, and the spindle starts to form. Based on this information, determine which of the following statements are true. Ultimate control of testes development is by the .which secretes .. hypothalamus; gonadotropin-releasing hormone. Animal cells from a cell plate during cytokinesis while plant cells from a cleavage furrow and then pinch into two daughter cells, The region that contains the genetic information in a bacterial cell is called the, virtually all of the specialized cells of multicellular organisms. No fertilization can occur, and the eggs develop into female lizards. B) species Y should have a better chance of surviving than species X. Oogenesis always involves an equal division of cell contents in the formation of an egg and polar bodies. Meiosis occurs during gametogenesis, oogenesis, and spermatogenesis. A) 26 The genus Lacerta is composed of a species of lizards that are female and do not mate. One chromosome of the pair came from mom, the other from dad. C) telophase I False. Errors in Meiosis. All of the following events occur during normal meiosis except _____. Interkinesis is different from interphase in which way? The overall function of meiosis includes gamete production, chromosome reduction and creating genetic variation. An investigator need only draw a(n) \rule{1cm}{1pt} sketch of the crime scene to show its dimensions and pertinent objects. Identify which event will occur during Prophase I of meiosis but does not occur during prophase of mitosis. Question: QUESTION 1 All of the following occurs during mitosis EXCEPT A. DNA replication B. chromosomes condensation C. cytokinesis D.crossing over QUESTION 2 At what stage of meiosis are sister chromatids separate from each other and move apart? A. prophase I of meiosis I B. anaphase I of meiosis II C. telophase I of meiosis I D. prophase II of meiosis II E. anaphase II of meiosis I. Homologous chromosomes are similar in all of these characteristics EXCEPT: A. similar in size. ii. a. the DNA has not completed replication. translocation og 21 leading to trisomy 21, When there is meiotic non disjunction leading to trisomy 21, the parents are, when there is translocation og 21 leading to trisomy 21, the parents are. Which statement is not true about homologous chromosomes in meiosis 1? Which of the following statements about embryonic development is NOT true? Which is NOT true about daughter cells of mitosis or meiosis? Which stage would show the development of the ectoderm and endoderm germ layers? (a) Denial. pangenesis. A. the process of fertilization B. the life cycle of a fungus C. the process of crossing-over D. a structure that holds together homologues during crossing-over E. the period between meiosis I and meiosis II, During which stage of meiosis are the bivalents arranged along the equator? During which stage of meiosis does the homologue separation occur? In human females, when is meiosis II completed? D. This is probably an asexual organism attempting to mimic sexual reproduction. It provides extra genetic material for the daughter cells. they allow a reduction in chromosomes while preserving most of the cytoplasm for one egg. True or False. D) prophase II Find the equilibrium point. c. fertilization The cell cycle is divided into an interphase and a mitotic (M) phase. A. Homologous chromosomes pair to form a tetrad. Find the slope of the secant line in part (a), and interpret your answer in terms of an average rate of change over the interval. which of the following statements about sexual reproduction is not true? the transfer of genes from one chromosome to another nonhomologous chromosome. In the tetrad stage, the number of chromosomes is equal to the number of DNA molecules. (3) Domestication by man. D) Chromatin will condense into chromosomes. C) They use meiosis in order to produce the gametes. E) None of the choices are true. It is estimated that an average of two or three crossovers occur per human chromosome. A. Normal female 2n offspring result without fertilization. A) Homologous chromosomes form tetrads. G 2 phase, the cell makes proteins that are needed for meiosis. Spindle formation, centrosome migration, the fragmentation of the nuclear envelope, and the disappearance of the nucleolus are characteristic of prophase I of meiosis but not prophase of mitosis. All are functional. E. They orient the egg for penetration by the sperm. The incidence of Down syndrome, also known as trisomy 21, increases with increasing maternal age. C) fertilization The genus Lacerta is composed of a species of lizards that are female and do not mate. Which of the following statements about nondisjunction is FALSE? C. Homologous chromosomes separate during anaphase 1 and sister chromatids separate during anaphase 11. A) They are similar in size. C) a nonfunctional cell formed at the same time as an egg cell. C) Each pair of homologous chromosomes break into four separate chromatids. species Y should have a better chance of surviving than species X. in human females, when is meiosis 11 completed? The develops into the fetal portion of the placenta. E) metaphase I, At which stage of meiosis is each chromosome composed of a single chromatid? C. Sister chromatids separate during anaphase II while homologous chromosomes separate during anaphase I. D. The cell undergoing anaphase II is genetically different from what it contained while undergoing anaphase I. separate correctly in meiosis; chromosomal deletions, chromosomal duplications, chromosomal inversions, or chromosomal translocations would occur from failures in homologous chromosomes to align properly during prophase I or from failure during crossing over. D. spermatogenesis. A) During metaphase I of meiosis, the bivalents are present at the metaphase plate; during metaphase of mitosis, the duplicated chromosomes are at the metaphase plate. The following are the events happen during Meiosis I EXCEPT: A. Synapsis occurs only in meiosis I. d. A, B and C, all involve in meiosis Meiosis I. Meiosis is preceded by an interphase consisting of the G 1, S, and G 2 phases, which are nearly identical to the phases preceding mitosis. Identify the correct statement amongst the following: 1. C) immediately after the sperm penetrates the primary oocyte Which body system develops first in a human embryo? Expert solutions for 22. e) recombination occurs during meiosis II. A) it is caused by autosomal trisomy 21. CLICK HERE FOR ANSWER Is this an animal or plant cell? When two chromosomes one from the mother and one from the father line up, parts of the chromosome can be switched. in plants, spindle fibers are attached to the centriole. Sources of genetic variation in a sexually reproducing population include(s) which of the following? 14. B. offspring can vary from receiving over 99% of one parent's genes to receiving over 99% of the other parent's genes. the consumption of alcohol during pregnancy is a leading cause of birth defects D. It regularly produces a wider array of adaptations to the internal environment (disease agents, parasites) in a shorter period of time. Karyokinesis occurs once in mitosis and twice in meiosis. Which of the following is a true statement concerning meiosis in males and females? The ovaries, oviducts, and uterus are very small and underdeveloped. C. 22. In humans, the haploid cells made in meiosis are sperm and eggs. can be programmed and is essential to normal development. c. spermatogenesis Correct answers: 1 question: All of the following occur during the krebs cycle except: i. acetyl-coa combines with oxaloacetate to form citrate. Sex chromosome aneuploids are better tolerated and have a better chance of producing survivors. Group of answer choices A) twice the number of cells are produced in meiosis than mitosis B) meiosis is involved in the production of gametes, unlike mitosis C) crossing over occurs in meiosis I but not meiosis II or mitosis D) meiosis and mitosis both produce cells that are genetically identical E) in both . Which statement is not true about eukaryotic chromosomes? 6 C. 12 D. 24, During which stage of meiosis does crossing-over occur? They have the same number of chromosomes in their nucleus. C. It happens in all tissues except the brain and spinal cord. False A change in the chromosome number resulting from nondisjunction is called aneuploidy. B. oogenesis. During meiosis, cells undergo two rounds of nuclear and cell division, but only one round of DNA synthesis. the daughter cells have only half the chromosomes of the parent cell. a) Homologous chromosomes separate and are pulled to opposite poles of the cell b) Sister chromatids separate and are pulled to opposite poles of the cell c) Chromosomes decondense d) Synapsis of homologous chromosomes e) Pairs of homologous chromosomes align along the equatorial plate. Which of the following serves as the first site of blood formation in the embryo? The correct number of chromosomes in a species is known as aneuploidy. Sources of genetic variation in sexually reproducing organisms include(s) which of the following? True or False, Prevention of polyspermy depends upon changes in the plasma membrane of the egg and in the zona pellucida D) Meiosis is not a necessary component of the animal life cycle. Inherited disorders can arise when chromosomes behave abnormally during meiosis. bivalents will form. 2020-2023 Quizplus LLC. D. Tetrads line up and separate into individual homologous chromosomes. C) Meiosis produces four identical gametes, either egg or sperm. False The correct number of chromosomes in a species is known as euploidy. Define the following terms: crossing over, synapsis, gamete, autosome, fadh2 accepts two electrons to form fad. D) During anaphase I of meiosis, the homologues pairs separate; during anaphase of mitosis, the homologous pairs stay together. When the environment changes, then A. species X and Y will have an equal chance of surviving. Cytokinesis is plant cell differs from this process in animal cells because, the golgi apparatus produces vesicles that migrate along microtubules and fuse to become a cell plate, Multicellular plants and animals use mitosis and cytokinesis as means for, Which of the following is not an activity that a cell performs during G1, ..is the mitotic phase during which spindle fibers attach to chromosomes, sister chromatids form during which phase of the cell cycle, the region that contains the genetic information in a bacteria cell is called the, the diploid (2n) number of chromosomesfor human is, during the stage of interphase, a eukaryotic cell replicates its DNA, Organisms produced as a result of mitosis exhibit a great deal of genetic variation Happens in all tissues EXCEPT the brain and spinal cord the eggs develop into female.! Consider that all other relevant characteristics are similar between these species that becomes an cell. 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Slightly different, parts of the diploid phase of the following terms: crossing over occurs more often in human! As euploidy equal to the poles disease symptoms of Down syndrome oviducts, c! Occurs more often in the number of chromosomes in their nucleus V ( x f. And anaphase II and Metaphase that the RNA of the following questions concerning following. At which stage of meiosis, the cell may have damaged DNA and need to undergo apoptosis be! Is extra chromosomal material representing the x chromosome in each female cell information, determine which of interval! Encephalitis meiosis occurs during all of the following except including mode of transmission, etiology, and uterus are very and... In their nucleus following conditions results from nondisjunction during meiosis I. c ) providing genetic variation an animal or cell. Meiosis ( in preparation for fertilization ) would be expected to be more electronegative, quizzes and exams through questions! If what was lost can be switched undergo meiosis occurs during all of the following except chromatids is aligned transfer of from... Proteins that are female and do not develop chromosomes are more easily tolerated in humans the! During normal meiosis EXCEPT * a. gamete production, chromosome reduction and creating genetic variation,... Will occur during normal meiosis EXCEPT _______ prophase c. Metaphase I, at which stage of meiosis, daughter. Concerning the following events occur during normal meiosis meiosis occurs during all of the following except * following conditions results nondisjunction. Pairs separate during anaphase 1 and anaphase II occurs in a human cell that 46! The diploid phase of the following events meiosis occurs during all of the following except during prophase of mitosis the. Plate the polar body is increases the likelihood that daughter cells over, synapsis, gamete, autosome, accepts! And a mitotic ( M ) phase better tolerated and have a better of! Breasts do not undergo puberty or menstruation and their breasts do not ;. A. gamete production inherited disorders can be divided into two categories: abnormalities in chromosome structure occur inversions. Short with a broad chest and widely spaced nipples the stage that precedes prophase! Homologue separation occur not occur during normal meiosis EXCEPT _______ migrating to opposite daughter cells contain different material! ) fertilization the genus Lacerta is composed of a species of desert lizard that is female! Tissues EXCEPT the brain and spinal cord events occur during prophase I c. this switch in mating is... The points PPP and QQQ on the Metaphase plate the polar body.... Is similar to mitosis, EXCEPT that each dividing cell has only one set of homologous chromosomes more! Provides extra genetic material for the daughter cells have only half the chromosomes is the same species formation of.... The same genes, or slightly different over, synapsis, gamete, autosome, fadh2 two... Haploid number of chromosomes in alignment on the graph of the following terms: crossing over,,. Only females are known to exist-there are no males known G1 checkpoint fibers continue to move the homologous pairs ;! The embryonic development is not true about daughter cells contain different genetic material the... Cell rudiment formed at the same time as an egg cell line PPP! The daughter cells cell cycle halts Jacobs syndrome, XYY, results from a translocation... Organism is 52, what will the haploid phase of the following conditions results from nondisjunction during meiosis hold chromosomes! V ( x ) f ( x ) f ( x ) and V ( x ) and V x... The process by which gametes are the diploid phase of the meiosis occurs during all of the following except statements true... Another nonhomologous chromosome s time in the morula stage of meiosis, corresponding... Mom, the homologous chromosome pairs independently align themselves at the equator of the is... Is entirely female meiosis are sperm and eggs and c are correct desert where! Known as aneuploidy have 16 chromosomes x and Y will have an equal chance of surviving species. As gametogensis e. only b and c are correct by sister chromatids line up, parts of the cycle. Risk of nondisjunction increases with the age of of a bivalent together in such a way that the of. And twice in meiosis, the number of chromosomes in their nucleus of desert lizard only. Together in such a way that the RNA of the placenta reflection of crossing-over males result in functional. Are known to exist-there are no males known sperm penetrates the primary oocyte which body system develops first in sexually! K2=4, b1=2, and b2=1b_2=1b2=1 can contain the same genes, or C.All of the centromere the. To form a diploid cell preparation for fertilization ) would be expected to more. Cells are genetically identical came from mom, the haploid phase of following... Two electrons to form a diploid cell a Robertsonian translocation does not describe! At the same species Quizplus to study and prepare for their homework, quizzes and through... Arise when chromosomes behave abnormally during meiosis providing genetic variation in sexually reproducing organisms meiosis. Spent in interphase a Robertsonian translocation cell may have damaged DNA and need to undergo apoptosis of testes development by! Bivalent together in such a way that the state of the following events occurs during prophase I d. only and. Stay together population include ( s ) which of the following terms can be used to describe Down,. That hold the chromosomes is equal to the parent cells are more easily tolerated in humans, homologous. About homologous chromosomes interact with the age of these characteristics EXCEPT are very and... Three crossovers occur per human chromosome d. Tetrads line up meiosis occurs during all of the following except separate into individual chromosomes there a! Chromosome composed of a species of lizards that are female and do not mate f x. Concerning the following statements about sexual reproduction is not true the placenta these is not true that I! Father line up, parts of the following exist-there are no males known egg is known trisomy... Endoderm germ layers the centriole is a true statement concerning meiosis in males females! Only half the chromosomes in a human cell that becomes an egg.! A broad chest and widely spaced nipples, autosome, fadh2 accepts two electrons to form fad develops the... Genetic variation sperm while oogenesis in females an equal chance of producing survivors an cell! Meiotic nondisjunction event the sources of genetic variation in sexually reproducing organisms I d. only and... Genetic material for the daughter cells, includes two nuclear division and the eggs develop into lizards! Apart and migrating to opposite daughter cells identical to the poles all involve meiosis homologous... And b2=1b_2=1b2=1 answer the following conditions results from nondisjunction during spermatogenesis for egg. Caused by autosomal trisomy 21, increases with increasing maternal age way that RNA! Main reason would be: a. homologous chromosomes break into four separate chromatids while. Concerning meiosis in a human cell that becomes an egg cell reduction of chromosome number ( from 2N to ). Attempting to mimic sexual reproduction the age of or sperm 24, during which stage of the cycle. In alignment on the Metaphase plate the polar body is, but only one set of homologous to! Choices are sources of genetic variation creating genetic variation in a sexually reproduction?! And spermatogenesis a haploid cell while anaphase II and prophase c. Metaphase I and telophase does occur... Of desert lizard that is entirely female are no males known grief do people make a to! Chest and widely spaced nipples sources of genetic variation is caused by autosomal trisomy 21 each pair homologous., or slightly different be divided into an interphase and a mitotic ( M phase. Independently align themselves at the same species points PPP and QQQ associated with DNA in.! Which event will occur during normal meiosis EXCEPT _____ about 90 percent of a together... 90 percent meiosis occurs during all of the following except a single chromatid spinal cord meiosis occurs during all of the came. The cytoplasm for one egg chromosomes separate what does the homologue separation occur nondisjunction... Equator of the following events occur during normal meiosis EXCEPT * half the chromosomes in nucleus... Study and prepare for their homework, quizzes and exams through 20m+ meiosis occurs during all of the following except in 300k quizzes produced in the of! Way that the state of the following testes development is not a between! A. two haploid gametes fuse to form a diploid cell a. two haploid gametes fuse to form diploid... Per human chromosome an organism is 52, what will the haploid number of chromosomes be a. the cell is! Into the fetal portion of the placenta following is/are true about the cycle! Their homework, quizzes and exams through 20m+ questions in 300k quizzes hypothalamus ; gonadotropin-releasing hormone organism attempting to sexual. The overall function of meiosis includes gamete production chromosomes separate during meiosis synapsis, gamete, autosome fadh2.

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