I do not understand how skin color in humans work, even after taking a basic genetics course and reading some on wikipedia.
From what I understand, skin is color based on multiple genes that control melanin and other products that affect appearance of skin. So then their are multiple alleles for "skin color" and also some of these alleles can be varying in their expression/inheritance? based on the other alleles presence?(epistasis)
So then a black person and a white person could have various skin colors (phenotypes?) And the offspring of these children could then have varying offspring as well?
Diagrams would help me maybe in explaining the concept.