Principle-Of-Inheritance-And-Variation Question 623
Question: Haemophilic female marries normal male, the theoretical ratio of their offsprings regarding haemophilia will be [CPMT 2005]
Options:
A) All offspring are haemophilic
B) All girls are not haemophilic
C) All sons are not necessarily haemophilic
D) Half daughters and half sons are haemophilic carriers
Show Answer
Answer:
Correct Answer: C
Solution:
All sons are haemophilic because this disease is caused by an X-linked mutant gene.