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Give scientific reasons : Colour blindness is more common in men than in women. - ICSE Class 10 - Biology

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Question

Give scientific reasons : Colour blindness is more common in men than in women.

Solution

Colour blindness is an X-linked disorder caused by a recessive gene. Males have only one ‘X’ chromosome and thus have only one copy of the gene which if recessive may lead to colour blindness. However, females have two ‘X’ chromosomes and both should possess the recessive gene for her to become colourblind, which occurs rarely.

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APPEARS IN

 2015-2016 (March) (with solutions)
Question 5.2.1 | 1.00 mark
Solution Give scientific reasons : Colour blindness is more common in men than in women. Concept: Genetics: - Sex Linked Inheritance of Diseases.
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