Polygenic Inheritance
Question
How many types of genotypes can exist in human population with respect to skin color?
Easy
Solution
Skin color in man is influenced by three different types of genes. Each dominant allele of a gene imparts one unit of skin color to man. Recessive allele does not impart any color to skin. The number of genotypes exist with respect to skin color is = 27. The dominant alleles of these genes are involved melanin synthesis.
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