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Answer: C. Pachytene stage of prophase-1
The enzyme recombinase is required in the pachytene stage of prophase-1.
The enzyme recombinase is required in the pachytene stage of prophase-1. It is an enzyme that catalyzes the cutting and rejoining of DNA. This process cuts one strand of DNA at a time and then joins them with another piece of DNA that has been cut from a different parent molecule.
The pachytene stage of prophase-1 is the point in meiosis when the homologous chromosomes have completely synapsed and are now called bivalents. The bivalents are held together by a series of proteins that form a structure called the synaptonemal complex.
The pachytene stage of prophase-1 is also known as the “crossing over” stage because, during this time, recombination can occur between genes on different chromosomes.
