Question

The process of crossing over occurs between

• A. Sister chromatids
• B. Non-sister chromatids
• C. Brother chromatids
• D. Non-brother chromatids

Answer 1

The correct option is B Non-sister chromatids

Crossing over is a phenomenon in which two chromosomes of a human organs for exchange equal segments with each other. It takes place in the phase 1 of meiosis 1. At this stage, the chromosome is replicated into two strands call sister-chromatids. The crossing over occurs between nonsister chromatids off to homologous chromosomes. The nonsister chromatids exchange segments of genetic material with each other after forming synapse to form recombinant chromosomes.

Thus, the correct answer is 'Non-sister chromatids.'