NEET BIOLOGY

Detailed explanation-1: -Crossing over, as related to genetics and genomics, refers to the exchange of DNA between paired homologous chromosomes (one from each parent) that occurs during the development of egg and sperm cells (meiosis).

Detailed explanation-2: -Homologous Recombination During the formation of egg and sperm cells (meiosis), paired chromosomes from the male and female parents align so that similar DNA sequences can cross over, or be exchanged, from one chromosome to the other.

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: -“Homologous recombination is the exchange of genetic information between two similar or identical strands of a double-stranded DNA molecule.” It is also known as general recombination. It occurs in eukaryotes, bacteria and viruses naturally.

Detailed explanation-5: -Recombination Versus Crossing Over Genetic recombination happens as a result of the separation of genes that occurs during gamete formation in meiosis, the random uniting of these genes at fertilization, and the transfer of genes that takes place between chromosome pairs in a process known as crossing over.