Meiosis

The somatic cells of a cat contain 38 chromosomes.

19

How many cell divisions occur during meiosis?

2

Which of the following events occurs during meiosis I?

Homologous chromosomes separate.

Which of the following is true of meiosis?

It produces haploid cells.

Which of the following statements are true about meiosis II?

Its goal is to separate sister chromatids./It results in the formation of four haploid (n) gametes.

What event is labeled as Process Z in the diagram?

Meiosis II

During meiosis, when does the ploidy (number of sets of chromosomes) get reduced from diploid (2n) to haploid (n)?

Once telophase I of meiosis I is complete

What is a likely result of crossing over during meiosis I?

Production of recombinant gametes

Dr. Evil just discovered a way to prevent crossing over from occurring during meiosis in the gametes of her lab rats.

Prophase I would be disrupted and there would be reduced genetic variation in the rats' offspring.

Which of the following answer choices best explains a mechanism as to how Down syndrome might occur?

Sister chromatids fail to separate at chromosome 21 during anaphase II in a parent's gamete.

Which of the following occurs during meiosis II?

The separation of sister chromatids

What is the overall purpose of meiosis?

To create gametes