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KVPY Sample Paper KVPY Stream-SX Model Paper-24

  • question_answer
    Suppose that in sheep, a dominant allele [B] produces black hair and a recessive allele [b] produces white hair. If you saw a black sheep, you would be able to identify

    A) Its phenotype for hair colour.

    B) Its genotype for hair colour.

    C) The genotypes for only one of its parents.

    D) The genotypes for both of its parents.

    Correct Answer: A

    Solution :

    Black is the phenotype of the sheep. Without further information, you cannot identify the genotype of a black sheep because it could be either BB or Bb. The possible genotypes of the parents of a black sheep could be \[BB \times BB, BB\times \]\[Bb, Bb\times bb,\]or \[Bb\times Bb.\]


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