AP BIOLOGY

Detailed explanation-1: -It is one of the final phases of genetic recombination, which occurs in the pachytene stage of prophase I of meiosis during a process called synapsis.

Detailed explanation-2: -Complete answer: Genetic recombination occurs in the Pachytene phase of prophase of meiosis I. So, the correct option is (C). Meiosis-It occurs in the mature diploid reproductive cells in which the nucleus divides twice but the chromosome replicates only once to form four haploid cells.

Detailed explanation-3: -Recombination in meiosis. Recombination occurs when two molecules of DNA exchange pieces of their genetic material with each other. One of the most notable examples of recombination takes place during meiosis (specifically, during prophase I), when homologous chromosomes line up in pairs and swap segments of DNA.

Detailed explanation-4: -Crossing over is a cellular process that happens during meiosis when chromosomes of the same type are lined up. When two chromosomes-one from the mother and one from the father-line up, parts of the chromosome can be switched. The two chromosomes contain the same genes, but may have different forms of the genes.