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In a monohybrid cross Tt × Tt, the phenotypic ratio in F2 is:
A3:1 (dominant:recessive)
B1:1
C1:2:1
D9:3:3:1
Answer & Solution
Correct answer: A. 3:1 (dominant:recessive)
Tt × Tt: TT : Tt : tt = 1:2:1 (genotypic). With T dominant: TT and Tt show same phenotype (tall) and tt is dwarf. Phenotypic ratio: 3 tall : 1 dwarf.
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