True-breeding dark mice are crossed with true-breeding light mice.The resulting progeny are then crossed with one another.This is an example of a _______ cross.
A) dihybrid
B) dominant
C) test
D) monohybrid
E) recessive

Question

Quizplus · Accepted Answer

The cross between true-breeding dark and light mice is a monohybrid cross because it involves the inheritance of only one trait (fur color). The resulting progeny from this cross are heterozygous for the fur color trait, and crossing them with each other is a test cross.

True-Breeding Dark Mice Are Crossed with True-Breeding Light Mice