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What is the genotype of a normal male with respect to colour blindness?

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Question

What is the genotype of a normal male with respect to colour blindness?

Options

  • XᴺY

  • XᴺXᶜ

  • XᶜY

  • XᴺXᴺ

MCQ
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Solution

A normal male has the genotype XᴺY, possessing one normal allele on his single X chromosome and a Y chromosome. This genotype results in normal colour vision.

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