Question

What is a two-point test cross?

Answer 1

Two-point test cross:

1. A test cross is done between a dominant phenotype and a recessive phenotype to estimate the zygosity of the dominant phenotype.
2. A two-point test cross is done to calculate the recombination frequency of two linked genes.
3. It is useful for determining the frequency of gametes produced.
4. If there is a deviation from the classical Mendelian ratio, then we know that the two genes are linked and present on the same chromosome.