Question

A test-cross is used to determine the genotype of a phenotypically dominant individual. To do this you mate the unknown individual with a _____________ individual and examine the phenotype of its offspring.

Answer 1

Homozygous recessive individual

Explanation:

1. Test cross is done To identify whether an organism exhibiting a dominant trait is either homozygous or heterozygous for a specific allele, a scientist can perform a test cross.

2. The organism which we want to check is crossed with an organism that is homozygous for the recessive trait, and the offspring of the test cross are examined.

3. Performed with an unknown dominant phenotype and homozygous recessive.