Genetic Basis of Blood Groups in Human Population
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Questions and Answers

What is the inheritance pattern of colour blindness?

  • Sex-linked dominant
  • Autosomal recessive
  • Autosomal dominant
  • Sex-linked recessive (correct)

    • What is the probability of a son being color blind if the mother is a carrier of the gene?

  • 25%
  • 75%
  • 100%
  • 50% (correct)

    • Why are males more affected by red-green colour blindness compared to females?

  • Males have two X chromosomes
  • Males lack the gene responsible for colour vision
  • The gene for red-green colour blindness is on the Y chromosome (correct)
  • Females have two X chromosomes

    • Why are daughters less likely to be color blind?

    <p>They inherit two X chromosomes</p> Signup and view all the answers

    In which type of inheritance pattern does haemophilia follow?

    <p>Sex-linked recessive</p> Signup and view all the answers

    What happens in an individual with haemophilia when there is a simple cut?

    <p>Non-stop bleeding occurs</p> Signup and view all the answers

    Why does haemophilia predominantly affect males?

    <p>Males only need one copy of the affected gene to show symptoms</p> Signup and view all the answers

    How does a female carrier of haemophilia transmit the disease?

    <p>Only to her sons</p> Signup and view all the answers

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