crossing over


noun Genetics.

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

Origin of crossing over

First recorded in 1910–15

Words nearby crossing over

British Dictionary definitions for crossing over

crossing over

noun

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 (def. 4)

Medical definitions for crossing over

crossing over

n.

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

Scientific definitions for crossing over

crossing over
crossing-over (krô′sĭng-ōvər)

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