Question

Which of the statements below about crossing over is correct?
It results in the exchange of genetic material between homologous chromosomes
It decreases genetic variation
It occurs during mitosis
It occurs between non-homologous chromosomes

Answer 1

The correct statement about crossing over is:

**It results in the exchange of genetic material between homologous chromosomes.**

Crossing over occurs during meiosis, specifically in prophase I, where homologous chromosomes exchange segments of their genetic material, leading to increased genetic variation in gametes. The other statements provided are incorrect.