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backcross

[bak-kraws, -kros] /ˈbækˌkrɔs, -ˌkrɒs/
verb (used with object)
1.
to cross (a hybrid of the first generation) with either of its parents.
noun
2.
an instance of such crossing.
Origin
1900-1905
1900-05; back2 + cross
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for back-crosses

backcross

/ˈbækˌkrɒs/
verb
1.
to mate (a hybrid of the first generation) with one of its parents
noun
2.
the offspring so produced
3.
the act or process of backcrossing
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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back-crosses in Medicine

backcross back·cross (bāk'krôs')
v. back·crossed, back·cross·ing, back·cross·es
To cross a hybrid with one of its parents, or with an individual genetically identical to one of its parents. n.

  1. The act of making such a cross.

  2. An individual resulting from such a cross.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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back-crosses in Science
backcross
  (bāk'krôs', -krŏs')   
Verb  To cross a hybrid with one of its parents or with an individual genetically identical to one of its parents. Backcrossing is used in research to isolate genetic characteristics found in one of the parents.

Noun  
  1. The act of making such a cross.

  2. An individual resulting from such a cross.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Article for back-crosses

backcross

the mating of a hybrid organism (offspring of genetically unlike parents) with one of its parents or with an organism genetically similar to the parent. The backcross is useful in genetics studies for isolating (separating out) certain characteristics in a related group of animals or plants. In animal breeding, a backcross is often called a topcross. Grading usually refers to the mating of average, or "grade," females to a superior male, then backcrossing the female offspring to the same or a similar sire.

Learn more about backcross with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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12
14
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