alleryIn Mendel's monohybrid cross, the phenotypic ratio in F₂ generation was:
A3:1
B1:1
C9:3:3:1
D1:2:1
Answer & Solution
Correct answer: A. 3:1
1. Mendel crossed pure tall (TT) and pure dwarf (tt) pea plants.
2. The F₁ generation was all tall hybrids (Tt).
3. Self-pollinating F₁ gave the F₂ generation with TT, Tt, Tt and tt.
4. Three out of four are tall (TT, Tt, Tt) and one out of four is dwarf (tt).
5. So the phenotypic ratio in F₂ is 3:1.
_Source: syllabus Science Ch 9 'Heredity' (learncbse.in extract)_
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