Human skin colour is polygenic trait with each dominant determing a part of melanin deposition while the recessive are coding for no melanin. If a very dark skinned person marries a very light skinned women, the chances of a very dark skinned offspring are

Colour of melanin in human skin is

Colour of melanin in human skin is

Colour of melanin in human skin is

In albinism the absence of the following pigment makes the skin and hair very light coloured :

Human skin colour is believed to be controlled by at least three seprate genes. (a) What do you call this type of inheritance? (b) Suppose the genes are designated as A, B and C and darkness is dominant over fairness, what shall be the genotypes of the darkest, fairest and intermediate skin colour? (c) What will be the total number of allele combinations in the gametes of a person heterozygous for all the three genes?