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  4. The colour blindness is more likely to occur in males than in females because

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Q. The colour blindness is more likely to occur in males than in females because

AIPMTAIPMT 1994Principles of Inheritance and Variation

Solution:

Colourblindness is the inability of certain human beings to distinguish red from green colour. It is produced by a recessive gene which lies on X chromosome. A marriage between normal visioned man (XY) and colourblind women (XCXC), results in colourblind sons (XCYC) and carrier daughters (XXC)