crossing over
noun Genetics.
the interchange of corresponding chromatid segments of homologous chromosomes with their linked genes.
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Origin of crossing over
First recorded in 1910–15
Words nearby crossing over
crosshead, cross index, cross infection, crossing, crossing guard, crossing over, crossjack, cross-legged, crosslet, crosslight, crossline
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
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
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.