Chapter:

Principles-of-Inheritance-and-Variation

Three Mark Questions:
Haemophilia is sex-linked recessive disorder of humans. The pedigree chart given below shows inheritance of haemophilia in one family. Study pattern of inheritance and answer questions given (a) Give all possible genotypes of members 4, 5 and 6 in pedigree chart
(b) A blood test shows that individual 14 is a carrier of haemophilia. The member numbered 15 has recently married numbered 14. What is probability that ir first child will be haemophilic male.

image