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प्रश्न
In the F₂ generation from the cross Tt × Tt, what phenotypic ratio did Mendel observe?
विकल्प
2:1 (Tall:Dwarf)
1:1 (Tall:Dwarf)
3:1 (Tall:Dwarf)
1:3 (Tall:Dwarf)
MCQ
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उत्तर
When F₁ heterozygous plants (Tt) were self-crossed, the F₂ generation showed a 3:1 phenotypic ratio of tall to dwarf plants. This occurs because the Punnett square produces genotypes in a 1:2:1 ratio (TT:Tt:tt), where both TT and Tt express the tall phenotype, resulting in 3 tall plants for every 1 dwarf plant.
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