Human skin color: The primary pigment responsible for pigmentation of the skin is what? Context: Consider the epidermal pigment produced by melanocytes in response to UV exposure. Choose the correct pigment.

Given data

• Asked: the pigment that determines skin coloration and tanning.

Concept / Approach
Melanin, produced by melanocytes and transferred to keratinocytes, provides baseline pigmentation and darkens with UV exposure.

Elimination
Carotene imparts a yellowish hue; hemoglobin influences redness beneath skin; bilirubin increase causes jaundice, not normal pigmentation.

Final Answer
Melanin.