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Class 12 NEET Biology Principles of Inheritance and Variation Questions Part 1
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Question : 65
Total: 100
Of a normal couple, half the sons are haemophiliac while half the daughters are carriers. The gene is located on
(1993)
X-chromosome of father
Y-chromosome of father
one X-chromosome of mother
both the X-chromosomes of mother.
Validate
Solution:
The gene is located on one X-chromosomes of mother. Cross between a haemophilic carrier female
X
h
X
and normal male would yield
50
%
of the sons being haemophilic and
50
%
of the daughter are carriers.
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