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Principles Of Inheritance And Variation

Question
CBSEENBI12000254

Haemophilia is a sex linked recessive disorder of humans. The pedigree chart given below show the inheritance of haemophilia in one family. Study the pattern of inheritance and answer the questions given.
(a) Give all the possible genotypes of the members 4, 5 and 6 in the pedigree chart.
(b) A blood test shows that the individual 14 is a carrier of haemophilia. The member numbered 15 has recently married the member numbered 14. 


What is the probability that their first child will be a haemophilic male?

 

Solution