Crossing over creates genetic variation by exchanging DNA between two nonsister chromatids to produce genetically unique chromosomes. The process of crossing over occurs during meiosis. More » Family Genealogy

During meiosis, crossing over occurs during prophase I. It is the exchange of genetic material between homologous chromosomes that results in recombinant chromosomes, which contribute to genetic diversity. More » Science Biology Molecular Biology & DNA

Crossing over begins very early in the prophase I stage of meiosis. During prophase I, pairs of homologous chromosomes exchange lengths of their genetic material. Crossing over leads to recombinant chromosomes and is a k... More » Science Biology Cells
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