Biology grade 12

Question

If two pea plants are crossed and the F1 offspring includes one homozygous tall pea plant, what are the phenotypes and genotypes of the parents?

Answer 1

Assuming tall is dominant. The cross is T_ x T_.

I.e. TT x TT, Tt x Tt, Tt x TT, or TT x Tt

Parent 1 phenotype: tall

Parent 2 phenotype: tall

Parent 1 genotype TT or Tt

Parent 2 genotype: TT or Tt

Important to undertand that parental genotypes are not always specifically determinable.