Genetics Cross Chart Question

Question

In cross between a tall pea plant and a short plant, 60 plants were produced, 28 of which were tall and 32 were short. What are the genotypes of the parent plants? T represents the allele for tallness and t the allele for shortness.

Answer 1

About half of the progeny are of each phenotype

One parent is TS and the other TT with the S allele being dominant

The crosses would be TT (25%) TT (25%) ST (25%) and ST (25%)

So 50% TT (tall phenotype) and 50% ST (short phenotype if S dominant)