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NEETZoologyPrinciples of Inheritance and Variation

What type of genetic disorder is Haemophilia?

Options

  1. AAutosomal dominant
  2. BAutosomal recessive
  3. CSex-linked dominant
  4. DSex-linked recessive

Correct answer

D. Sex-linked recessive

Step-by-step solution

This sex linked recessive disease , which shows its transmission from unaffected carrier female to some of the male progeny has been widely studied. In this disease, a single protein that is a part of the cascade of proteins involved in the clotting of blood is affected. Due to this, in an affected individual a simple cut will result in non-stop bleeding. The heterozygous female (carrier) for haemophilia may transmit the disease to sons. The possibility of a female becoming a haemophilic is extremely rare because m

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