polygenic inheritance
This is a typical kind of continuous variation which is controlled by polygenes.
polygenic traits
Natural eye colour is discontinuous. :) !
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.
Skin cancer
You have the gene of tallness, but you don't eat enough so that your body size doesn't change. Continuous variation in human population is always the result of interaction between genotype and the environment
Variation within the human population refers to the differences in traits such as height, skin color, and blood type that exist among individuals. This variation is influenced by genetic factors, environmental factors, and interactions between the two. It is what allows humans to adapt to different environments and thrive in diverse conditions.
Polygenic inheritance results in traits that are controlled by multiple genes, leading to a wide range of possible phenotypes within a population. This can contribute to continuous variation in traits such as height, skin color, and intelligence.
Human species, as in the variation in height.
Human recombination is a significant source of genetic variation.
Overexposure to UV light can lead to sunburn, skin aging, and an increased risk of skin cancer. Additionally, it can damage the DNA in skin cells, leading to mutations that may contribute to the development of skin cancer.
Human skin is well skin, and polar bears aren't human skin.