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
crossfoot,
crosshatch,
crosshead,
crossing,
crossing guard,
crossing over,
crossjack,
crosslet,
crosslight,
crossline,
crossly
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-ō′vər)
The exchange of genetic material between homologous chromosomes that occurs during meiosis and contributes to genetic variability.