STANDARDZoology-Genetics
STANDARD Zoology Sex-linked inheritance MCQ Question
Type: MCQ-conceptual-Medium
A colour blind son will born when
A
Mother is normal and father normal
B
Mother is colour blind and father normal
C
Mother is normal and father is colour blind
D
All the cases are correct
Correct Answer
Option B
Detailed Explanation
A colour blind son can be born if the mother is a carrier or affected by colour blindness and the father is normal. This is because the gene for colour blindness is located on the X chromosome.
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