Question
Which of the following pigments is mainly responsible for the colour of our hair, skin and eyes?
This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper (8-Mar-2021) (Shift 2)
The correct answer is
Melanin
Melanin Pigment Function
The primary biological pigment responsible for determining the color of human skin, hair, and eyes is Melanin. It is synthesized by cells known as melanocytes.
Melanin Role in Coloration
- Skin: Melanin concentration dictates skin tone and protects against harmful UV radiation.
- Hair: Differences in melanin type and quantity result in various hair colors.
- Eyes: Melanin in the iris influences eye color, from light blue to dark brown.
Incorrect Pigment Explanations
The other pigments listed are not responsible for human skin, hair, or eye color:
- Xanthophyll: A pigment found in plants, contributing to yellow/orange colors.
- Myoglobin: A protein in muscles that stores oxygen.
- Chlorophyll: The green pigment essential for photosynthesis in plants.
Therefore, Melanin is the correct pigment associated with human coloration.
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