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IAT IISER2025BiologyPrinciples of Inheritance and Variation

Two double heterozygous plants (PpQq), derived from two different pairs of true-breeding parents of unknown genotype, produce gametes in the proportions as given below. Which one of the following options correctly represents the genotype of the parents?

Options

  1. AR 1= ppQQ ; R 2= PPqq ; R 3= PPQQ ; R 4= ppqq
  2. BR 1= PPQQ ; R 2= ppqq ; R 3= ppQQ ; R 4= PPqq
  3. CR 1= ppQQ ; R 2= PPqq ; R 3= PPqq ; R 4= ppQQ
  4. DR 1= PPQQ ; R 2= ppqq ; R 3= ppqq ; R 4= PPQQ

Correct answer

A. R 1= ppQQ ; R 2= PPqq ; R 3= PPQQ ; R 4= ppqq

Step-by-step solution

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