Question

Mating an individual expressing a dominant phenotype, but whose genotype is unknown, with an individual expressing the corresponding recessive phenotype is an example of:

a. a heterozygous cross.
b. an F1 cross.
c. an F2 cross.
d. a parental cross.
e. a test cross.

Answer 1

A test cross is a cross between a dominant expressing individual with an unknown genotype and a homozygous recessive individual. It helps determine whether the dominant expressing individual is a heterozygote or a homozygote for the dominant trait.

Step-by-step explanation:

A test cross is a cross between a dominant expressing individual with an unknown genotype and a homozygous recessive individual. This type of cross can help determine whether the dominant expressing individual is a heterozygote or a homozygote for the dominant trait. The offspring phenotypes of the test cross can provide information about the genotype of the unknown parent.