Which statement best describes the process of crossing over? Homologous chromosomes pair up, and non-sister chromatids exchange genetic material. Homologous chromatids pair up, and non-sister chromosomes exchange genetic material.

Which statement best describes the process of crossing over? Homologous chromosomes pair up, and non-sister chromatids exchange genetic material. Homologous chromatids pair up, and non-sister chromosomes exchange genetic material.

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter8: How Cells Reproduce

Section: Chapter Questions

Problem 12SQ

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Question

Which statement best describes the process of crossing over?

Homologous chromosomes pair up, and non-sister chromatids exchange genetic material.

Homologous chromatids pair up, and non-sister chromosomes exchange genetic material.

Pairs of homologous chromosomes are divided in half and distributed randomly into new haploid cells.

Pairs of homologous chromatids are divided in half and distributed randomly into new diploid cells.

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Which of the following statements is not true in comparing mitosis and meiosis? a. Twice the number of cells are produced in meiosis as in mitosis. b. Meiosis is involved in the production of gametes, unlike mitosis. c. Crossing over occurs in meiosis I but not in meiosis II or mitosis. d. Meiosis and mitosis both produce cells that are genetically identical. e. In both mitosis and meiosis, the parental cell is diploid.
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The process of meiosis occurs during the cell cycle production and results in four unique diploid four identical diploid cells four unique haploid cells four identical haploid cells . To maintain the correct number of chromosomes in offspring, male and female gametes contain the same number half of the number twice the number of chromosomes as somatic cells. During fertilization, gametes fuse to form a diploid haplid cell called a zygote.
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