Which one of the following character in man is controlled by recessive gene?
A
Colour blindness
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B
Woolly hair
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C
Brachy-dactyly
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D
Curly hairs
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Solution
The correct option is A Colour blindness Colour blindness is a X-linked recessive disorder. Hair type in man shows incomplete dominance with curly and woolly hair types being dominant character. Brachy-dactyly is autosomal dominant character. Option A is the correct answer.