? It reduces number of chromosomes to half in daughter cells. ? Gametes are formed as a result of meiosis. Each gamete possesses half the number of chromosome present in somatic cells. ? It is very essential phenomenon in life cycle of sexually reproducing organisms as it restores the fixed number of chromosomes. ? It avoids the multiplication of chromosomes and thus maintain the stability and constant number of chromosomes of the species. ? During the crossing over, exchange of genetic material between non sister chromatids results variations that produce genetic recombinations (recombinants).