Explain the inheritance of sex linked recessive character in human being.

Explanation

The sex linked recessive characters in human beings are: Colour blindness, Hemophilia etc,
Colour Blindness: colour blindness if particular trait in human beings renders them unable to differentiate between the red colour and green colour. The gene for this colour blindness is located on X-chromosome. colour blindness is recessive to normal vision so that if colour blind man marries a normal (homozygous) vision woman, all the sons and daughters are normal but daughters are heterozygous, which means that these daughters would be carries to this trait. If such a carrier a man with normal vision, all the daughters and half of the sons have normal vision and half of sons are colour blind.

Hemophilia: Hemophilia is the most notorious disease which is more common in men that women. This is also known as bleeder.s disease. If is the recessive character and is therefore masked in the heterozygous condition. Individuals suffering with this disease lack a factor responsible for clotting of blood. Consequently even a minor cut on the or in body surface may cause prolonged bleeding leading to death. Since it is caused by recessive X-linked gene. a lady may carry the disease and would transmit it to 50% of her sons, even if the father is normal.