Question

What is the cross known as when the progeny of F1 and a homozygous recessive plant is crossed? State its advantage.

​

Answer 1

Answer:

Test Cross

When the cross is between an F1 hybrid with the homozygous recessive parent, it is known as a Test Cross. Complete answer: Let's take an example of Tt x tt. When these two individuals are crossed, there will be two progeny who have the genotype Tt and two who have the genotype tt.

Answer 2

Test Cross

• When a progeny of F1 is crossed with the homozygous recessive parent, it is called test cross. Such a cross is useful to determine the genotype of an unknown, i.e., whether it is heterozygous, or homozygous dominant for the trait.