In humans, skin color is a polygenic trait, which means that it is influence by more than
one gene. Thus, a couple can have children with a range of skin colors. Please cross the
following couple who is each heterozygous for each gene: AaBbCc x AaBbCc
(Hint: The lower case letter are for lighter skin, and the upper case letters are for darker
skin. For skin color, the upper case are considered "dominant", but they are not exactly
dominant because the lower case letters are still producing pigment for the skin, also, just
less pigment.)
ori
Proportion of population
Skin pigmentation
What are the genotypic ratios for the cross above?
What are the phenotypic ratios for the cross above?