A cross between a normal couple resulted in a son who was haemophilic and a normal daughter

cbse
principleinheritance

#1

A cross between a normal couple resulted in a son who was haemophilic and a normal daughter. In course of time, when the daughter was married to a normal man, to their surprise, the grandson was also haemophilic.
a. Represent this cross in the form of a pedigree chart.Give the genotypes of the daughter and her husband.
b. Write the conclusion you draw of the inheritance pattern of this disease.


#2