This is a typical kind of continuous variation which is controlled by polygenes.
polygenic traits
Skin color is a polygenic trait. A polygenic trait is one that is controlled by multiple genes. Each gene for skin color deposits no pigment, some pigment, or lots of pigment. The additive effect of the deposited pigment from each gene for skin color results in a whole spectrum (continuum) of color. Also, skin color is affected by the environment, which further increases the variation in human skin color.
Polygenic inheritance shows a continuous variation. An example of polygenic inheritance is human skin because it has a variety of colors. An example of something not having polygenic phenotype is earlobes because they are either free or attached; there is no in-between state.
polygenic inheritance
Human skin is an example of an organ because it provides protection for the rest of our body.
Natural eye colour is discontinuous. :) !
An example of skin color discrimination, better known as racism, would be firing an employee because of their skin color or not promoting them in a company because of their skin color.
Human blood types
Hera is a god, not a human being. She has no skin.
Skin color
Skin color.
The human color skin was light