Dihybrid Cross

Problem 9: Homozygous offspring of a dihybrid cross, again.

In a dihybrid cross, SsYy x SsYy, what fraction of the offspring will be homozygous for both traits?

A. 1/16

B. 1/8

C. 3/16

D. 1/4

There are four different genotypes that are homozygous for both traits. These are SSYY, SSyy, ssYY, and ssyy.

E. 3/4


The Biology Project
University of Arizona
Tuesday, August 13, 1996
Contact the Development Team

http://www.biology.arizona.edu
All contents copyright © 1996. All rights reserved.