Question

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

• A. Non-sister chromatids of a bivalent
• B. Two daughter nuclei
• C. Two different bivalents
• D. Sister chromatids of a bivalents

Answer 1

The correct option is A Non-sister chromatids of a bivalent

The process of crossing over Lakes 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. The process of crossing over is depicted in the picture above.

So, the correct answer is 'Non-sister chromatids of a bivalent'.