Write short note Haemophilia .
The pedigree chart given below shows a particular trait which is absent in parents but present in the next generation irrespective of sexes. Draw your conclusion on the basis of the pedigree.
A colour blind man marries a woman with normal sight who has no history of colour blindness in her family. What is the probability of their grandson being colour blind ?
Colour blindness is caused by a single
A man known to be victim of haemophilia marries a normal woman whose father was known to be a bleeder. Then it is expected that