Q.

Which of the following is the best example of polygenic inheritance?

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a

Human blood group

b

Pea grain phenotypes

c

Human skin colour

d

Pea stem height

answer is C.

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Detailed Solution

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Best example of polygenic inheritance is human skin colour.
Human blood group – is an example for codominance or multiple alleles.
Pea grain phenotypes (means starch synthesis, seed size, seed shape) is an example of pleiotropy.
Pea stem height is an example of complete dominance.

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