HEREDITY
MULTIPLE ALLELES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is NOT a trait that is considered to be a polygenic inheritance?
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size
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height
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color
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hemophilia
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Explanation:
Detailed explanation-1: -Blood type AB in humans, for instance, is not a polygenic trait.
Detailed explanation-2: -These genes control skin pigmentation only, no other phenotypic trait is affected by these genes. Likewise, human eye colour and hair pigment in the mouse are polygenic but tongue rolling in humans is not polygenic which makes option A incorrect.
Detailed explanation-3: -So, the correct answer is ‘Skin colour in humans’.
Detailed explanation-4: -Three examples of polygenic traits in humans are height, skin colour and eye colour. These traits are governed by multiple genes.
There is 1 question to complete.