Given below is a highly simplified representation of the human sex chromosomes from a karyotype. The genes 'a' and 'b' could be of

  • A
    Colour blindness and body height
  • B
    Attached ear lobe and rhesus blood group
  • C
    Haemophilia and red-green colour blindness
  • D
    Phenylketonuria and haemophilia

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