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Biology · PYQ NEET UG 2016(1)

हिन्दी

A tall true-breeding garden pea plant is crossed with a dwarf true-breeding garden pea plant. When the F1 plants were selfed, the resulting genotypes were in the ratio of:

  1. 3 : 1 :: Tall : Dwarf
  2. 3 : 1 :: Dwarf : Tall
  3. 1 : 2 : 1 :: Tall homozygous : Tall heterozygous : Dwarf
  4. 1 : 2 : 1 :: Tall heterozygous : Tall homozygous : Dwarf

Correct answer · Option 3

1 : 2 : 1 :: Tall homozygous : Tall heterozygous : Dwarf

Explanation

Selfing of the F1 monohybrid (\( Tt \)) yields genotypes in the ratio of \( 1 \) (\( TT \), homozygous tall) : \( 2 \) (\( Tt \), heterozygous tall) : \( 1 \) (\( tt \), dwarf).
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