Homologous chromosomes may exchange segments; this is called crossing over. Crossing over increases genetic variability.

Question

Where would you add "crossing over" to the Venn diagram?
Responses
A MeiosisMeiosis
B MitosisMitosis
C Center - both mitosis and meiosisCenter - both mitosis and meiosis
D All three locations--crossing over may occur at any time during the cell cycle

Answer 1

Crossing over occurs specifically during meiosis, when homologous chromosomes pair up and exchange segments of genetic material. It does not occur during mitosis. Therefore, the best choice for where to add "crossing over" in the Venn diagram is:

A. Meiosis