Question

If a cross between two plants given 50% tall and 50% dwarf progency then the parents genotype are

Answer 1

Parent genotype will be Tt× tt.

Answer 2

Test cross is a cross between the F1 hybrid and a recessive parent.The ration of test cross is 1:1 (tall:dwarf) = (50:50).

Therefore the genotype of the parents are

Tt (F1 hybrid) and tt (recessive parent).

The cross is already given by one of our friends,hope this adds an extra note to it :)