question: What is a polygenic trait?
choices.text: dwarfism black widows pigmentation Sickle-cell disease orange coliform canis lupus ability to roll tongue
choices.label: A B C D E F G H
fact2: Skin color is determined by the melanin pigment in the skin cells.
combinedfact: Melanin pigment is determined by a polygenic trait.
formatted_question: What is a polygenic trait? (A) dwarfism (B) black widows (C) pigmentation (D) Sickle-cell disease (E) orange (F) coliform (G) canis lupus (H) ability to roll tongue