Biological Science (6th Edition)
6th Edition
ISBN: 9780321976499
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Emily Taylor, Greg Podgorski, Jeff Carmichael
Publisher: PEARSON
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Textbook Question
Chapter 13, Problem 2TYK
What is an outcome of genetic recombination?
a. the synapsing of homologs during prophase of meiosis I
b. the new combination of maternal and paternal chromosome segments that results when homologs cross over
c. the new combinations of chromosome segments that result when self-fertilization occurs
d. the combination of a haploid phase and a diploid phase in a life cycle
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Students have asked these similar questions
How can duplications arise?
A.
by uneven crossing over during meiotic prophase
B.
by the loss of a telomere
C.
by chromosome breakage and exchange of arms
D.
by spindle failure during chromosome separation
When does DNA replication occur during meiosis?
a.
during telophase
b.
during prophase I
c.
during anaphase and telophase
d.
during interphase before meiosis I begins
Which process leads to independent assortment?
a)The process of separating chromosomes
b)The random alignment of homologs with respect to the others on the metaphase plate
c)The process of forming the mitotic spindle
d)The process of cytokinesis
Chapter 13 Solutions
Biological Science (6th Edition)
Ch. 13 - CAUTION What are homologous chromosomes? a....Ch. 13 - What is an outcome of genetic recombination? a....Ch. 13 - What proportion of chromosomes in a man's skin...Ch. 13 - Nondisjunction that leads to problems in offspring...Ch. 13 - Explain the relationship between homologous...Ch. 13 - If you followed a woman's cells through meiosis,...Ch. 13 - 7. CAUTION Dogs have 78 chromosomes in their...Ch. 13 - Prob. 8TYUCh. 13 - QUANTITATIVE Meiosisresults in independent...Ch. 13 - 10. PROCESS OF SCIENCE A species of rotifer, a...
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- Which event leads to a diploid cell in a life cycle? a. meiosis b. fertilization c. alternation of generations d. mutationarrow_forwardA) Hoe many cells are produced by the end of meiosis II? B) Are the cells produced at the end of meiosis II haploid or diploid? C) Are the chromosomes of the four final meiotic products replicated or nonreplicated?arrow_forwardWhich statement is true of meiosis? 1)two identical cells in both divisions 2)the first division produces haploid cells and the second produces diploid cells 3)the first division produces diploid cells and the second produces haploid cells 4) the products of both meiotic divisions are haploidarrow_forward
- What is the main difference between autopolyploid and allopolyploid? a. the number of chromosomes b. the functionality of the chromosomes c. the source of the extra chromosomes d. the number of mutations in the extra chromosomesarrow_forwardGive explanation X and Y chromosomes are not homologs, but in meiosis they do pair and segregate in XY organisms to create 50% haploid gametes with an X chromosome and 50% haploid gametes with a Y chromosome. How is pairing achieved? a. Since all other homologous chromosomes pair, the remaining two chromosomes pair by default. b Pairing proteins are capable of binding to different genes on the X and Y chromosomes, which allows them to pair. c. None of the statements is correct. d. They don't actually pair. Random segregation generally ensures the X and Y chromosomes separate. e.Pseudoautosomal regions that are homologous exist at the tips of both the X and Y chromosomes, and they allow pairing.arrow_forwardHow do cells after meiosis compare with cells that are in the prophase of meiosis I?A) The cells have half the number of chromosomes and one-fourth the amount of DNA.B) The cells have the same number of chromosomes and half the amount of DNA.C) The cells have half the number of chromosomes and half the amount of DNA.D) The cells have half the amount of cytoplasm and twice the amount of DNA.arrow_forward
- Genetic recombination occurs by which process? a. independent assortment b. crossing over c. chromosome segregation d. sister chromatidsarrow_forwardWhich statement best describes the genetic content of the two daughter cells in prophase II of meiosis? A. Haploid with one copy of each gene B. Haploid with two copies of each gene C. Diploid with two copies of each gene D. Diploid with four copies of each gene E. tetraploid with four copies of each genearrow_forwardWhat is the purpose of mitosis? a It ensures that new nuclei have an exact copy of DNA. b It ensures the reproduction of mitochondria and chloroplasts. c It guarantees that each daughter cell has half the amount of DNA of parent cells. d It prevents the occurrence of cancer cells.arrow_forward
- When does synapsis between homologous chromosomes occur? A. prophase I of meiosis B. prophase II of meiosis C. prophase of mitosis D. metaphase of mitosisarrow_forwarda) In which stage of mitosis do chromosomes condense? (b) If a eukaryotic organism has a total of 34 chromosomes, how many pairs will the chromosomes be arranged in? (c) Define homologous chromosomes.arrow_forwardHow does the sexual life cycle increase the genetic variation in a species? a. by providing gametes with different combinations of parental chromosomes. b. by allowing the combination of chromosomes from two different individuals. c. by allowing recombination of the alleles on a chromosome. d. A and B only. e. A, B, and C. Explain your answer.arrow_forward
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