If there is a history of haemophilia in the family, the chances of male members becoming haemophilic are more than that of the female.
(a) Why is it so ?
(b) Write the symptoms of the disease.

Haemophilia is more common in males than females, because it is

Explain the pattern oftinheritance of haemophilia in humans. Why is the possibility of a human female becoming haemophilic extremely rare ? Explain.

Expression of sex linked character like haemophilia is more prone in male than female . Why ?

Haemophilia is more commonly seen in human males than in human female because:

Haemophilia is more commonly seen in human males than in human females because

Why is haemophilia rare in human females ? Mention a clinical symptom for the disease.

Haemophilia is a sex linked recessive disorder of humans. The pedigree chart given below shows 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 gaemophilia. The member numbered 15 has recently married the member numbered 14. What is the probability that their first child will be a haemophilic male ? Show with the help of Punnett square.

Why are pentahalides more covalent than trihalides in the members of the nitrogen family ?