Question

.What are the genotypes of the parents in the monohybrid cross below if the following offspring genotypes are predicted?

TT and tt
Tt and Tt
Tt and TT
Tt and tt

Answer 1

The offspring in the first column both have two dominant T alleles. Therefore, you know that the father (parent on the left hand side) is TT and the mother (parent on the top) has a dominant T in that column too.

The offspring in the second column are Tt. The dominant T came from the father, as figured out in the first part of the problem. The recessive allele t came from mother's second empty box.

So the parent's genotypes are TT x Tt.

Clear?

Answer 2

yes,thank you!