Question

How does crossing over contribute to genetic variation in daughter cells?

A. Non-sister chromatids swap DNA segments.
B. Spindles pull apart and swap DNA segments on sister chromatids.
C. Spindles pull apart the DNA segments on non-sister chromatids,
swapping some of them.
D. Sister chromatids swap DNA segments.

Answer 1

Crossing over in meiosis involves the swapping of genetic material between non-sister chromatids, leading to new combinations of alleles in daughter cells.

Step-by-step explanation:

Crossing over refers to the swapping of genetic material between homologous chromosomes during meiosis. It occurs during Prophase I and involves non-sister chromatids. The chromatids exchange segments of DNA, resulting in the creation of new combinations of alleles on the chromosomes distributed to the daughter cells.

Learn more about Crossing over and genetic variation