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NEETZoologyPrinciples of Inheritance and Variation

How is Haemophilia transmitted in a family according to the paragraph?

Options

  1. AFrom an affected male to his offspring
  2. BFrom an unaffected carrier female to some of the male progeny
  3. CFrom an unaffected male to his children
  4. DFrom both parents equally to all offspring

Correct answer

B. From an unaffected carrier female to some of the male progeny

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 mo

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