Q: When do homologous chromosomes form pairs?


Read this paragraph and choose the correct option from the provided answers:

When homologous chromosomes form pairs during prophase I of meiosis I, crossing-over can occur. Crossing-over is the exchange of genetic material between non-sister chromatids of homologous chromosomes. It results in new combinations of genes on each chromosome.

 Choices:

- mitosis

- metathesis

- transcripton

- meiosis


A:
meiosis