Imagine that beak color in a finch species is controlled by a single gene.You mate a finch homozygous for orange (pigmented)beak with a finch homozygous for ivory (unpigmented)beak and get numerous offspring,all of which have a pale,ivory- orange beak.This pattern of color expression is most likely to be an example of

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This pattern of color expression is a classic example of incomplete dominance, where the heterozygote has a phenotype that is intermediate between the two homozygotes. In this case, the pale, ivory-orange beak of the offspring is intermediate between the orange beak of one parent and the ivory beak of the other parent. Pleiotropy refers to a single gene affecting multiple traits, codominance involves both alleles being expressed equally in the heterozygote, and polygenic inheritance involves multiple genes contributing to one trait.

Imagine That Beak Color in a Finch Species Is Controlled