A testcross involves ____.
A)two individuals with dominant traits
B)two homozygous dominant individuals
C)two homozygous recessive individuals
D)an individual with a dominant trait and a heterozygous individual
E)an individual with a dominant trait and a homozygous recessive individual

Question

Quizplus · Accepted Answer

A testcross involves crossing an individual with a dominant phenotype (but unknown genotype) with an individual that is homozygous recessive for the same trait. This allows the determination of the unknown genotype of the individual with the dominant phenotype. Therefore, the best choice is E where the individual with the dominant trait is crossed with a homozygous recessive individual.

A Testcross Involves ____