Question

When F₁ hybrids (Tt) were self-crossed, what was the phenotypic ratio observed in the F₂ generation?

Options

• 1 TT : 2 Tt : 1 tt

• 1 Tall : 1 Dwarf

• 3 Tall : 1 Dwarf

• All Tall

Answer 1

The F₂ phenotypic ratio is 3 tall : 1 dwarf. This occurs because three genotypes express the tall phenotype (TT and Tt), while only one genotype expresses the dwarf phenotype (tt).