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Biology 2e by Openstax | ISBN: 9781947172517 | Authors: Mary Ann Clark Texas Wesleyan University , Jung Choi Georgia Polytechnic University , Matthew Douglas Grand Rapids Community College
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Figure 13.6 Which of the following statements about nondisjunction is true? a. Nondisjunction only results in gametes with n+1 or n–1 chromosomes. b. Nondisjunction occurring during meiosis II results in 50 percent normal gametes. c. Nondisjunction during meiosis I results in 50 percent normal gametes. d. Nondisjunction always results in four different kinds of gametes. Figure 13.6 Nondisjunction occurs when homologous chromosomes or sister chromatids fail to separate during meiosis, resulting in an abnormal chromosome number. Nondisjunction may occur during meiosis I or meiosis II.

Chapter 13, Problem 3

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QUESTION:

Figure 13.6 Which of the following statements about nondisjunction is true?

a. Nondisjunction only results in gametes with n+1 or n–1 chromosomes.

b. Nondisjunction occurring during meiosis II results in 50 percent normal gametes.

c. Nondisjunction during meiosis I results in 50 percent normal gametes.

d. Nondisjunction always results in four different kinds of gametes.

Figure 13.6 Nondisjunction occurs when homologous chromosomes or sister chromatids fail to separate during meiosis, resulting in an abnormal chromosome number. Nondisjunction may occur during meiosis I or meiosis II.

Questions & Answers

QUESTION:

Figure 13.6 Which of the following statements about nondisjunction is true?

a. Nondisjunction only results in gametes with n+1 or n–1 chromosomes.

b. Nondisjunction occurring during meiosis II results in 50 percent normal gametes.

c. Nondisjunction during meiosis I results in 50 percent normal gametes.

d. Nondisjunction always results in four different kinds of gametes.

Figure 13.6 Nondisjunction occurs when homologous chromosomes or sister chromatids fail to separate during meiosis, resulting in an abnormal chromosome number. Nondisjunction may occur during meiosis I or meiosis II.

ANSWER:

Step 1 of 2

Given data:

Which of the following statements about nondisjunction is true?

a. Nondisjunction only results in gametes with n+1 or n–1 chromosomes.

b. Nondisjunction occurring during meiosis II results in 50 percent normal gametes.

c. Nondisjunction during meiosis I results in 50 percent normal gametes.

d. Nondisjunction always results in four different kinds of gametes.

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