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NEST2017BiologyPrinciples of Inheritance and Variation

Two pedigrees (P and Q) are given below. Individual-1 in F ₀ generation of pedigree Q is not a carrier of the trait. Circles in the pedigree represent females and squares represent males. Filled shapes indicate affected individuals while unfilled shapes indicate unaffected individuals. Assuming Mendelian inheritance and complete penetrance of the traits, choose the correct statement(s) from the following:

Options

  1. ABoth pedigrees P and Q represent autosomal recessive traits.
  2. BBoth pedigrees P and Q represent autosomal dominant traits.
  3. CPedigree P represents an autosomal recessive trait and Q represents an autosomal dominant trait.
  4. DPedigree P represents an X -linked recessive trait and Q represents an autosomal recessive trait.

Correct answer

C. Pedigree P represents an autosomal recessive trait and Q represents an autosomal dominant trait.

Step-by-step solution

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