Which of the following is likely to be the result of polygenic inheritance?
A) freckles
B) an extra finger
C) human height
D) ABO blood type

Question

Quizplus · Accepted Answer

Polygenic inheritance refers to traits that are influenced by multiple genes, with each individual gene having a relatively small effect on the trait. Human height is a classic example of a polygenic trait, with many genes contributing to variations in height among individuals. A and D are not examples of polygenic inheritance - freckles are influenced by a single gene, while ABO blood type is determined by the interaction of three alleles of a single gene. B is an example of a rare genetic mutation (polydactyly) that is not generally considered to be a polygenic trait.

Which of the Following Is Likely to Be the Result