Final answer:
Skin color in humans is an example of Polygenic Inheritance, which involves multiple genes contributing to a single trait, creating a range of phenotypes.
Step-by-step explanation:
Skin color in humans, which is caused by several genes at several loci, is an example of Polygenic Inheritance. Polygenic inheritance is a scenario in which a trait is controlled by more than one gene. Human skin color is influenced by the action of at least three (and probably more) genes which contribute collectively to a range of possible phenotypes for that characteristic. This differs from traits influenced by single genes as was originally observed in Mendel's studies with pea plants, where traits were usually controlled by one gene with two alleles.
By contrast, Epistasis occurs when the expression of one gene is dependent on another gene, such as the pigmentation in mice. A separate gene is required for pigment production, making the C gene epistatic to the A gene. And unlike polygenic inheritance, Codominance and Incomplete Dominance refer to the patterns of inheritance where one allele is not completely dominant over the other, resulting in a phenotype that is a blending of the two alleles in the case of incomplete dominance, or the simultaneous expression of both alleles, as in codominance.