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crossing over

noun, Genetics.
1.
the interchange of corresponding chromatid segments of homologous chromosomes with their linked genes.
Origin
1910-1915
1910-15
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples for crossing over
  • For every deletion, something that happens during an unequal recombination or crossing over, a duplication occurs.
  • All in all, crossing over has been rewarding and fun.
  • By crossing over the polar region, planes are able to fly shorter distances and burn less fuel.
  • He would no more think of crossing over to acids or paints than to poetry.
  • Famous franchises have a long history of crossing over with one another in the pages of comics.
  • He enters from the left side of the door, crossing over to sweep the right side of the room.
  • And a celebrity athlete who's crossing over into mainstream pop culture faster than anybody thought.
  • The two had a tense moment crossing over each other in the middle, but successfully finished.
  • What this means is that early in cell division a process known as crossing over occurs.
  • Exit immediately to the right after crossing over the bridge.
British Dictionary definitions for crossing over

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 (sense 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
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crossing over in Medicine

crossing over cross·ing o·ver (krô'sĭng) or cross·ing-o·ver (krô'sĭng-ō'vər)
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.
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crossing over in Science
crossing over or 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 © 2002. Published by Houghton Mifflin. All rights reserved.
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