A test cross can be used to do all of the following except
A)determine whether an individual that displays a dominant phenotype is homozygous for the trait.
B)determine whether an individual that displays a dominant phenotype is heterozygous for the trait.
C)gather genotype information from phenotype information.
D)identify the chromosome on which a gene is locateD.

Question

Quizplus · Accepted Answer

A test cross involves crossing an individual displaying a dominant phenotype with a homozygous recessive individual to determine the genotype of the dominant individual. This can be used to determine if the dominant individual is homozygous or heterozygous for the trait, as well as gather genotype information from phenotype information. However, it cannot be used to identify the chromosome on which a gene is located. For that, other techniques such as genetic mapping would be needed.

A Test Cross Can Be Used to Do All of the Following