Explain how the different forms of the gene produce different colours of coat.

Skin colour is a good example of polygenic (multiple genes) inheritances. Skin colour is determined by the amount of the dark colour pigment melanin in the skin. This trait is determined by at least three genes. The genes that determine skin colour have two alleles each and are found on different chromosomes.

The gene has 6 colours of coat.

skin colour is a good example of polygenic (multiple gene) inheritances. skin colour is determined by the amount of the dark colour pigment melanin in the skin. this trait is determined by at least three genes.

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.