A particular genetic cross in which an individual with a dominant phenotype and an unknown genotype is crossed with an individual known to be homozygous for a recessive trait is referred to as
A) a parental cross.
B) a dihybrid cross.
C) filial generation mating.
D) a reciprocal cross.
E) a test cross.

Question

Quizplus · Accepted Answer

A test cross is a genetic cross between an individual with a dominant phenotype, but an unknown genotype, and an individual who is homozygous recessive for the trait of interest. The purpose of the test cross is to determine the unknown genotype of the parent with the dominant phenotype. This cross can be used to determine whether the dominant individual is homozygous dominant (DD) or heterozygous (Dd) for the trait in question. Dihybrid cross involves two traits, reciprocal cross is a type of cross in which the sexes of the parents are switched, and filial generation mating refers to breeding between two of the offspring from the same parental cross.

A Particular Genetic Cross in Which an Individual with a Dominant