crossing over
noun Genetics.
the interchange of corresponding chromatid segments of homologous chromosomes with their linked genes.
Words nearby crossing over
crossfoot, crosshatch, crosshead, crossing, crossing guard, crossing over, crossjack, crosslet, crosslight, crossline, crossly
Origin of crossing over
First recorded in 1910–15
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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
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 offspringSee also linkage (def. 4)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Medicine definitions for crossing over
crossing over
n.
The exchange of genetic material between homologous chromosomes that occurs during meiosis and contributes to genetic variability.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Science 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.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.