Study the pedigree chart given below. What does it show?

726-669

  • [AIPMT 2009]
  • A

    Inheritance of a condition like phenylketonuria as an autosomal recessive trait.

  • B

    The pedigree chart is wrong as this is not possible.

  • C

    Inheritance of a recessive sex­linked disease like haemophilia.

  • D

    Inheritance of a sex­linked inborn error of metabolism like phenylketonuria.

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