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crossing overor cross·ing-o·ver (krô′sĭng-ō′vər, krŏs′ĭng-)
The exchange of genetic material between homologous chromosomes that occurs during meiosis and contributes to genetic variability.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Genetics) 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 linkage4
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
the exchange of segments of chromatids between pairs of chromosomes during meiosis, resulting in a recombination of linked genes.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||crossing over - the interchange of sections between pairing homologous chromosomes during the prophase of meiosis|
diplotene - the fourth stage of the prophase of meiosis
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