Question

During which phase of meiosis does crossing over occur?

(A)metaphase I
(B)metaphase II
(C)prophase I
(D)prophase II

Answer 1

C.prophase I

Because its the only phase that cross over

Answer 2

Answer: C: Prophase 1

Crossing over occurs in the first division of meiosis. Crossing over of chromatid pair occurs in PACHYTENE stage of PROPHASE I.

The crossing over is the exchange of genetic material. The crossing over takes place due to exchnage od DNA segments between non sister chromatids of homologous chromosomes. This results in new allelic combinations in daughter cells.