alleryThe F₂ **phenotypic** ratio of a Mendelian monohybrid cross is:
A1 : 1
B3 : 1
C1 : 2 : 1
D9 : 3 : 3 : 1
Answer & Solution
Correct answer: B. 3 : 1
Tt × Tt → 1 TT : 2 Tt : 1 tt (genotypic).
Since T is dominant, phenotypes are 3 Tall : 1 Dwarf — the classic 3:1 monohybrid ratio.
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