Question

question 6 of 10
what happens to the chromosomes of diploid parent cells during meiosis?
a. homologous chromosomes are replicated to form tetrads, which are grouped together in four new daughter cells.
b. homologous chromosomes are separated, and then sister chromatids are replicated to double their number.
c. the chromosomes are replicated twice to produce four identical copies in the daughter cells.
d. the chromosomes are divided twice: first by separating pairs of homologous chromosomes, and then by separating sister chromatids.

Explanation:

In meiosis, chromosomes first replicate. Then in meiosis I, homologous chromosomes separate. In meiosis II, sister chromatids separate, resulting in four non - identical haploid cells from a diploid parent cell.

Answer:

D. The chromosomes are divided twice: first by separating pairs of homologous chromosomes, and then by separating sister chromatids.