question_answer

Crossing over that results in genetic recombination in higher organisms occurs between:             

A) sister chromatids of bivalent                                      

B) non-sister chromatids of a bivalent

C) two daughter nuclei                                                      

D) two different bivalents

Correct Answer: B

Solution :

                The process of crossing over takes place in pachytene stage of prophase I of meiosis I. In this process some genes of two non sister chromatids of a bivalent are exchanged.