Question

How to calculate the genotypic ratio of a monohybrid OUTCROSS

Answer 1

Monohybrid outcross is the cross between unrelated individuals of same species that involves only one character. It involves the cross between F1 progeny and homozygous dominant parent.

For example, in pea plants, the cross between F1 generation (Tt) and homozygous dominant parent (TT) represents outcross.

This can be depicted as:

Parents Tt x TT

Gametes T , t T , T

F2 TT TT Tt Tt

Genotypic ratio: 1 : 1