BIOLOGY
5th Edition
ISBN: 9781264104680
Author: BROOKER
Publisher: MCG
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Chapter 16, Problem 9TY
Summary Introduction
Introduction: The production of haploid cells that were originally diploid is called meiosis. The chromosomes should be correctly sorted and distributed in order to produce haploid cells. Meiosis plays an important role in the process of sexual reproduction. The phenomenon of crossing over is more commonly observed in case of meiosis as compared to mitosis.
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CRITERIA
MITOSIS
MEIOSIS
a. chrosomosomes number of daughter cells
b. number of cell divisions
c. stages
d. Presence of synapses
e. presence of crossing over
f. cell type that undergoes cell division
g. number of daughter cells formed
h. DNA content of cells at start of division
i. DNA content of daughter cells
j. genetic consequences
Give the genetic content © and chromosome number (n) of a diploid cell during the following phases: a. G1 b. S-phase c. G2 d. metaphase e. anaphase f. telophase after cytokinesis
A cell in G1 of interphase has 12 chromosomes (2 n = 12). How many chromosomes and DNA molecules will be found per cell when this original cell progresses to the following stages? a. G2 of interphase b. Metaphase I of meiosis c. Prophase of mitosis d. Anaphase I of meiosis e. Anaphase II of meiosis f. Prophase II of meiosis g. After cytokinesis following mitosis h. After cytokinesis following meiosis II
Chapter 16 Solutions
BIOLOGY
Ch. 16.1 - Researchers usually treat cells with drugs that...Ch. 16.1 - Which phases make up interphase?Ch. 16.1 - Prob. 1CSCh. 16.1 - Prob. 1EQCh. 16.1 - The Eukaryotic Cell Cycle CoreSKILL What...Ch. 16.1 - Prob. 3EQCh. 16.2 - Prob. 1CCCh. 16.2 - Mitotic Cell Division Concept Check: What are the...Ch. 16.3 - Core Skill: Modeling The goal of this modeling...Ch. 16.4 - Sexual Reproduction Concept Check: What is the...
Ch. 16.5 - Variation in Chromosome Structure and Number...Ch. 16 - Prob. 1TYCh. 16 - Prob. 2TYCh. 16 - Prob. 3TYCh. 16 - Prob. 4TYCh. 16 - Prob. 5TYCh. 16 - Which of the following is not an event of anaphase...Ch. 16 - Prob. 7TYCh. 16 - Which of the following statements accurately...Ch. 16 - Prob. 9TYCh. 16 - Aneuploidy may be the result of a. duplication of...Ch. 16 - Prob. 1CQCh. 16 - Prob. 2CQCh. 16 - Prob. 3CQCh. 16 - Prob. 1COQCh. 16 - A diploid eukaryotic cell has 10 chromosomes (5...
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- Gametes contain one of each kind of chromosome because Select one: O A The homologous chromosomes separate during meiosis. B. Crossing-over occurs during prophase I. C. Only one replication of DNA occurs during meiosis. D. The chromatids separate during meiosis.arrow_forwardWhich of the following occur during anaphase II of meiosis? Select one: a. The APC adds phosphates to motor proteins causing them to rebuild the nuclear envelope. b. Homologous chromosomes of the tetrad separate and move to opposite poles of the newly dividing cell. c. DNA de-condenses. d. Non-identical (due to recombination) sister chromatids are split, attach to motor proteins, and are moved to separate polesarrow_forwardWhich of the following is one of the very importantdifferences between mitosis and meiosis?a. Chromosomes align midway between spindle polesonly in meiosis.b. Homologous chromosomes separate only inmeiosis.c. DNA is replicated before mitosis only.d. Sister chromatids separate only in meiosis.e. Interphase occurs only in mitosis.arrow_forward
- A cell has 8 chromosomes in metaphase II of meiosis. How many chromosomes and DNA molecules will be present per cell in this same organism at the following stages? a. Prophase of mitosis b. Metaphase I of meiosis c. Anaphase of mitosis d. Anaphase II of meiosis e. Anaphase I of meiosis f. After cytokinesis that follows mitosis g. After cytokinesis that follows meiosis IIarrow_forwardHow would each of the following events affect the outcome of mitosis or meiosis? a. Mitotic cohesin fails to form early in mitosis. b. Shugoshin is absent during meiosis. c. Shugoshin does not break down after anaphase I of meiosis. d. Separase is defective.arrow_forwardWhich of the following is the primary difference between mitosis and meiosis? A. Meiosis occurs in somatic cells, whereas mitosis is only used to produce germ cells. B. Mitosis occurs in somatic cells, whereas meiosis is only used to produce germ cells. C. Meiosis always occurs much more quickly than mitosis. D. Only meiosis includes a separation division step, which occurs during Meiosis I.arrow_forward
- Which of the following statements are True? There may be more than one answer. Select one or more: a. Mitosis results in 2 haploid cells O b. If a parent cell with 10 chromosomes undergoes mitosis, each offspring cell will have 10 chromosomes O c. At the start of meiosis, a human cell will have 46 chromosomes and 92 chromatids d. The purpose of mitosis is the production of gametes e. In Meiosis, crossing over occurs during Meiosis II f. Meiosis only occurs in the testes and ovariesarrow_forwardDuring crossing over,a. chromatids of homologous chromosomes exchange parts.b. mutations occur with higher than average frequency.c. chromatids of nonhomologous chromosomes exchange parts.d. nondisjunction occurs.arrow_forwardAt the metaphase plate during metaphase I of meiosis, there are Select one: A. Chromosomes consisting of one chromatid. B. Unpaired duplicated chromosomes. O C. Bivalents. D. Pairs of sister chromosomes.arrow_forward
- A Biology 30 student is describing, to a friend, the differences between mitosis and meiosis. She highlights the following characteristics of these processes. For each statement state if it's refering to mitosis, meiosis, mitosis and meiosis or neither. A. involves two rounds of cell division B. results in daughter cells that are identical to the parent cell C. creates gametes D. happens only in certain kinds of cells in the body E. happens more often in somatic cells, such as stomach lining cells, than in nerve cells, such as brain cells F. involves duplication of genetic materialarrow_forward5. Homologous chromosomes move towards opposite poles of a dividing cell during... a. mitosis b. meiosis I c. meiosis II d. fertilization e. binary fission 6. Meiosis II is similar to mitosis in that... a. homologous chromosomes synapse b. DNA replicates before the division c. the daughter cells are diploid d. sister chromatids separate during anaphase e. the chromosome number is reduced 7. Metaphase of meiosis I and meiosis II differ in that... a. chromosomes line up at the equator b. homologues line up in meiosis I and duplicated chromosomes line up in meiosis II c. sister chromatids line up in meiosis I and chromosomes line up in meiosis II d. there are the same number of chromosomes 8. Asexually reproducing organisms produce offspring that are genetically identical to each other and to the parents. What type of cell division are the offspring a product of? a. mitosis b. meiosis c. binary fission d. fertilization 9. At which stage of meiosis do chromatids separate and become…arrow_forwardDuring meiosis Ia. homologous chromosomes synapse.b. crossing over between homologous chromosomes occurs.c. the chromosomal number is reduced by half.d. two haploid cells are produced.e. All of these are correct.arrow_forward
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