Which of the following is an example of polygenic inheritance?
A) pink flowers in snapdragons
B) the ABO blood group in humans
C) Huntington's disease in humans
D) white and purple flower color in peas
E) skin pigmentation in humans

Question

Quizplus · Accepted Answer

Skin pigmentation in humans is an example of a trait that is controlled by multiple genes, making it polygenic. Skin color is determined by the interaction of at least three genes, which is why there is a wide range of skin tones across human populations. ABO blood group is an example of multiple alleles, but not polygenic inheritance. Pink flowers in snapdragons and white and purple flower color in peas are both examples of incomplete dominance. Huntington's disease is caused by a single dominant allele.

Which of the Following Is an Example of Polygenic Inheritance