%@LANGUAGE="JAVASCRIPT" CODEPAGE="1252"%>
![]() |
Genetic 342 A&B Kenneth G Wilson Professory of Botany |
Crosses Involving three or more pairs of genes
Example Problem
In Drosophila the following wild type alleles are used for analysis v (vermilion eyes), cv (cross-veinless) and ct (cut or snipped wing edges). Flies doubly recessive and homozygous (v+v+,cvcv,ctct) are crossed with flies singly recessive and homozygous (vv, cv+cv+, ct+ct+). Female progeny that are vv+, cvcv+, ctct+ are then test crossed with the tripley recessive males (vv, cvcv, ctct)
Trihybrid cross Assuming Independent Assortment
There are two possible solutions
![]() |
This is our friend Oliver the parrotlet, Oliver is a true parrot, the smallest in the world. |