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(C) The correct option is $C$,$aabbcc$. Human skin colour is an example of polygenic inheritance,where three genes $(A, B, C)$ control the trait. Each

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aabbcc

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(C) The correct option is $C$,$aabbcc$. Human skin colour is an example of polygenic inheritance,where three genes $(A, B, C)$ control the trait. Each gene has two alleles,where the dominant alleles $(A, B, C)$ contribute to the production of more melanin (darker skin),and the recessive alleles $(a, b, c)$ contribute to the production of less melanin (lighter skin). The effect of these alleles is cumulative. Therefore,the genotype $AABBCC$ results in the darkest skin colour due to the presence of six dominant alleles. Conversely,the genotype $aabbcc$ results in the lightest skin colour because it lacks all dominant alleles,leading to the minimum production of melanin.

Choose the possible genotype responsible for lightest skin colour in human beings.

Similar Questions

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