What is crossing over?

When two sister chromatids exchange genetic information

The final stage of meiosis

When two homologous chromosomes transfer genetic information in prophase I

When two homologous chromosomes choose the Dark Side.

1 answer

Crossing over is best described as when two homologous chromosomes transfer genetic information in prophase I. During this process, homologous chromosomes, which are similar but not identical, exchange segments of DNA, leading to genetic recombination. This is a crucial mechanism for increasing genetic diversity in sexually reproducing organisms.