Crossing over is an enzyme-mediated process. The enzyme involved in this process is active during which of the following stages of Prophase I?

Step-by-step solution

Crossing over is the exchange of genetic material between non-sister chromatids of homologous chromosomes. It is an enzyme-mediated process, and the enzyme involved is called recombinase. This process occurs during the pachytene stage of Prophase I of meiosis. Therefore, the enzyme recombinase is active during the pachytene stage. Answer: Pachytene