Skin color in man is controlled by how many pairs of genes?
Correct answer: C. 3
- A. 1
- B. 2
- C. 3
- D. None of these
Explanation
Correct option: C (Fact) (3 pairs of genes control skin color in man). Skin color in humans is determined by multiple genes, specifically three pairs of genes. These genes control the production and distribution of the pigment melanin, which is responsible for skin, hair, and eye color. The three pairs of genes involved in skin color variation are responsible for the amount of melanin produced, the type of melanin produced, and the distribution of melanin in the skin.
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About Inheritance
Mendel's laws explain segregation, independent assortment and the prediction of genetic ratios using alleles, genotypes and phenotypes. The chapter also covers linked genes, recombination and crossing over during meiosis, then applies pedigree reasoning to X-linked recessive traits, which show different inheritance patterns in males and females.
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