Question

A tall true breeding garden pea plant is crossed with a dwarf true breeding garden pea plant. When the F₁ plants were selfed the resulting genotypes were in the ratio of

(a) 3 : 1 :: Tall : Dwarf

(b) 3 : 1 :: Dwarf : Tall

(c) 1 : 2 : 1 :: Tall homozygous : Tall heterozygous : Dwarf

(d) 1 : 2 : 1 :: Tall heterozygous : Tall homozygous : Dwarf.

Answer 1

(c) 1 : 2 : 1 :: Tall homozygous : Tall heterozygous : Dwarf

Explanation: F1 - Tall heterozygous

Tall heterozygous × Tall heterozygous = Tall homozygous (TT), Tall heterozygous (Tt), Dwarf(tt)