alleryIn Mendel's monohybrid cross between true-breeding tall (TT) and dwarf (tt) plants, the F₂ phenotypic ratio was:
A9:3:3:1
B1:2:1
C1:1
D3:1 (tall:dwarf)
Answer & Solution
Correct answer: D. 3:1 (tall:dwarf)
F₂ phenotypic ratio in a monohybrid cross = **3 tall : 1 dwarf**.
Genotypic ratio = **1 TT : 2 Tt : 1 tt**.
The 3:1 includes the heterozygotes Tt that look tall (dominance).
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