Height is a trait that shows continuous variation in humans.In pea plants,on the other hand,the tall allele is dominant over the short allele and there are no intermediate heights.What is the best explanation for this difference?
A)The alleles that control height in pea plants are epistatic.
B)The alleles that control height in pea plants are pleiotropic.
C)The alleles that control height in humans are pleiotropic.
D)Height is a polygenic trait in humans.
E)Height is a polygenic trait in pea plants.

Question

Quizplus · Accepted Answer

Height in humans is influenced by multiple genes, each contributing a small amount to the overall height, which results in the continuous variation observed. This is the definition of a polygenic trait.

Height Is a Trait That Shows Continuous Variation in Humans