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4.Principles of Inheritance and Variation
medium
$A$ : The posssibility of a female becoming a haemophilic is extremely rare.
$R$ : Mother of such a female has to be carrier and father should be haemophilic
A
Assertion and Reason both are correct and also correct explanation.
B
Assertion and Reason both are correct but not explanation of assertion.
C
Assertion is correct, but Reason is incorrect.
D
Both Assertion and Reason are incorrect.
Solution
It is $X$ linked recessive
Standard 12
Biology
