Biology · Variation and Genetics
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Skin color in man is controlled by how many pairs of genes?
- A
1
- B
2
- C
3
- D
None of these
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.
1: Skin color is not controlled by a single gene, but rather by multiple genes.
2: Two pairs of genes would not be sufficient to account for the complex variations in skin color observed in human populations.
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.
None of these: This option is incorrect because skin color in humans is indeed influenced by genetic factors, specifically multiple genes.
Tagged under Biology · Variation and Genetics · 2021