crossing over

noun

, Genetics.

1. the interchange of corresponding chromatid segments of homologous chromosomes with their linked genes.

crossing over

noun

1. biology the interchange of sections between pairing homologous chromosomes during the diplotene stage of meiosis. It results in the rearrangement of genes and produces variation in the inherited characteristics of the offspring See also linkage

crossing over

/ krô′sĭng-ō′vər /

1. The exchange of genetic material between homologous chromosomes that occurs during meiosis and contributes to genetic variability.

Word History and Origins

Origin of crossing over¹

First recorded in 1910–15