The allele of the human transport protein associated with light skin is found almost exclusively in europeans. the other common allele, which appears to be the ancestral allele, is found in africans. explain how you think the allele present in europeans came to be so common in this population.

 Alleles are one of two or more another form of gene that may result to mutation and originate at the identical place on a chromosome. The "G" allele is collective among African descendants and causes larger amount of the dark pigment melanin to be existing in skin cells, while the "A" allele is communal among European descendants and causes a smaller amount of melanin in skin cells.