Question

During gamete formation, the enzyme recombinase participates during

• A. Prophase I
• B. Prophase II
• C. Metaphase I
• D. Anaphase II

Answer 1

The correct option is A Prophase I

During gamete formation, the enzyme recombinase participates during pachytene stage of prophase I. This stage is characterised by the appearance of recombination nodules, the sites at which crossing over occurs between non-sister chromatids of the homologous chromosomes. Crossing over is the exchange of genetic material between two homologous chromosomes. Crossing over is also an enzyme-mediated process and the enzyme involved is called recombinase.