CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

A man whose father was colour blind marries a woman who had colour blind mother and normal father. What percentage of male children of this couple will be colour blind.


A
0%
loader
B
50%
loader
C
75%
loader
D
25%
loader

Solution

The correct option is B $$50\%$$
As color blindness is an autosomal recessive genetic disorder, for it is present at X -chromosome. Thus, according to the situation given in the question, a man whose father was color blind (will be, i.e, XY normal) marries a woman whose mother was color blind and father was normal (i.e, this woman will be a carrier) according to the cross given in the first figure.
Thus, when marriage will happen between a normal man and a carrier woman, in that case, the percentage of a male child to be colorblind is 25% (this can be easily observed from the second figure).

So, the correct answer is '50%'.







1167928_689778_ans_63c312c3c1654f8aaf7a083cde62423e.PNG

Biology

Suggest Corrections
thumbs-up
 
1


similar_icon
Similar questions
View More


similar_icon
People also searched for
View More



footer-image