Illustrate How the Five Basic Human Eye Colors Can Be

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The Answer is In this model,human eye color is determined by different combinations of alleles of two genes interacting to synthesize and deposit melanin in the iris.If two genes control a trait and each has a dominant and a recessive allele,there are five phenotypic classes in the F2,each of which is controlled by four,three,two,one,or zero dominant alleles.The F2 ratio of 1 : 4 : 6 : 4 : 1 results from the genotypic combinations that produce each phenotype.At one extreme is the homozygous dominant (AABB)genotype with four dominant alleles; at the other extreme is the homozygous recessive (aabb)genotype with no dominant alleles.The largest phenotypic class (6/16)has six genotypic combinations.Combinations of alleles result in small differences in eye color.

Illustrate How the Five Basic Human Eye Colors Can Be

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