Reciprocal Crossing Over

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Reciprocal Crossing Over

 

(also reciprocal cross), a system of two crossings—direct and reverse. In reciprocal crossing over, each of the genotypically different parental types A and B is used both as a maternal form and as a paternal form (♀ A × ♂ B and ♀ B × ♂ A). Differences between reciprocal hybrids may be caused by the maternal organism, cytoplasmic heredity, or sex-linked genes.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.