Meiosis and Sexual Life Cycles End of the Chapter

Question 1

1. A human cell containing 22 autosomes and a Y chromosome is a. a sperm. b. an egg.
   c. a zygote. d. a somatic cell of a male. .

Answer 1

A) a sperm.

Question 2

2. Homologous chromosomes move toward opposite poles of a dividing cell during a. mitosis. b. meiosis I. c. meiosis II. d. fertilization.

Answer 2

B) meiosis I.

Question 3

3. Meiosis II is similar to mitosis in that a. sister chromatids separate during anaphase. b. DNA replicates before the division. c. the daughter cells are diploid. d. homologous chromosomes synapse.

Answer 3

A) sister chromatids separate during anaphase.

Question 4

4. If the DNA content of a diploid cell in the G1 phase of the cell cycle is x, then the DNA content of the same cell at metaphase of meiosis I would be a. 0.25x. b. 0.5x. c. x. d. 2x

Answer 4

D) 2x.

Question 5

5. If we continued to follow the cell lineage from question 4, then the DNA content of a single cell at metaphase of meiosis II would be a. 0.25x. b. 0.5x. c. x. d. 2x.

Answer 5

C) x.