Which of the processes does not lead to variation in offspring with the same parents?* A. Random fusion of gametes from different parents. B. Random assortment of chromosomes in M1 C.Crossing over of chromosomes D.Interkinesis

Which of the processes does not lead to variation in offspring with the same parents?* A. Random fusion of gametes from different parents. B. Random assortment of chromosomes in M1 C.Crossing over of chromosomes D.Interkinesis

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter12: Meiosis And Sexual Reproduction

Section: Chapter Questions

Problem 6SA: Dogs have a diploid chromosome number of 78. How many chromosomes do their gametes have? a. 39 c....

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Question

Which of the processes does not lead to variation in offspring with the same parents?*

A. Random fusion of gametes from different parents.

B. Random assortment of chromosomes in M1

C.Crossing over of chromosomes

D.Interkinesis

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How 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.
A) 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?
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 chromosomes
Give 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.
Which 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 haploid
Explain why the relative location of two genes on a chromosomecan affect the way their alleles are distributed into gametes.
What makes sexually reproduced offspring genetically different from their parents? a. Genetic recombination during mitosis b. Genetic recombination during meiosis c. Sexual reproduction does not produce genetically different offspring d. Crossing over during mitosis
Which 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
Meiosis is a necessary part of sexual reproduction because it_____ . a. divides two nuclei into four new nuclei b. reduces the chromosome number for gametes c. gives rise to new alleles
which of these could lead to the mistake evident in the karyotype? A) a failure of cytokinesis after meiosis I in gamete formation B) a nondisjunction in meiosis II in gamete formation C) crossing over in meiosis ! in gamete formation D) fertilizaton by two sperm in zygote formation
Genetic recombination occurs by which process? a. independent assortment b. crossing over c. chromosome segregation d. sister chromatids
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