Human meiosis is responsible for the recombination of genetic material through crossing over, which happens roughly 50 times in males and 70 times in females per cell for every meiosis.
Meiosis is a type of cellular division reserved for germ cells in any organisms which reproduce sexually. The goal of this process is to gamete cells. These are sperm cells in males and egg cells in females. It involves two rounds of division that result in four cells with only one copy of each chromosome, which is done in order to preserve the chromosome count after fertilization.
Crossing over is a process that is exclusive to meiosis. This includes the interchanging of genetic material that occurs in sexual cells. During the formation of these cells during the process of meiosis, paired chromosomes from each parent line up to one another.
They do so in a way that allows DNA sequences from similar alleles to cross over between each chromosome, effectively diversifying the genetic pool and the possible combinations of genes. This occurs about 50 times in sperm cells and 70 times in each egg cell for every meiosis that occurs.
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