HEREDITY
CODOMINANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Blood Type
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Height
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Skin Color
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Eye Color
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Detailed explanation-1: -Blood type AB in humans is not a polygenic trait.
Detailed explanation-2: -Blood type AB in humans, for instance, is not a polygenic trait. Rather, it is a case of codominance. The two alleles for A and B antigens on the red blood cells of blood type AB individuals are dominant and therefore are expressed together.
Detailed explanation-3: -Polygenic traits include such features as eye color, hair color, skin color, and blood type.
Detailed explanation-4: -Human phenotypes such as hair color, eye color, height, and weight are examples of polygenic traits.
Detailed explanation-5: -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.