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NEETZoologyPrinciples of Inheritance and Variation

Phenotypic Ratio Cross A. 3:1 1. Test cross of dihyrbid with recessive parent B. 9:3:3:1 2. Test cross with a heterozygous plant C. 1:1 3. Dihybrid cross in F2 generation D. 1:1:1:1 4. Monohybrid cross in F2 generation

Options

  1. AA - 4, B - 3, C - 2, D - 1
  2. BA - 4, B - 3, C - 1, D - 2
  3. CA - 3, B - 4, C - 2, D - 1
  4. DA - 2, B - 1, C - 4, D - 3

Correct answer

A. A - 4, B - 3, C - 2, D - 1

Step-by-step solution

3:1 ratio: Monohybrid cross in F2 generation. 9:3:3:1 ratio: Dihybrid cross in F2 generation. 1:1 ratio: Test cross with heterozygous individual. 1:2:1 ratio: Incomplete dominance or codominance.

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