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NEETZoologyPrinciples of Inheritance and Variation

Disorder Cause A. Down syndrome 1. Substituition of Glu by Val B. Turner syndrome 2. 45, X (Monosomy X) C. Klinefelter syndrome 3. 47, XXY D. Sickle Cell anemia 4. Trisomy 21

Options

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

Correct answer

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

Step-by-step solution

Down syndrome: Trisomy 21 (three copies of chromosome 21). Turner syndrome: 45, X (Monosomy X, missing one X chromosome). Klinefelter syndrome: 47, XXY (an extra X chromosome in males). Sicke cell anemia: Substituition of Glu by Val

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