Question

during which phase of meiosis does crossing over occur?
metaphase i
prophase i
anaphase i
telophase ii

Explanation:

Crossing over, the exchange of genetic material between homologous chromosomes, takes place during the pachytene stage of Prophase I of meiosis. This is a key event that increases genetic diversity, and it does not occur in the other listed phases.

Answer:

C. Prophase I