Question

ethnic differences in skin color are primarily caused by differences in

multiple choice

uv radiation exposure

the type and quantity of melanin produced

the number of keratinocytes

the quantity of hemoglobin carried in the blood

the number of melanocytes

Explanation:

Melanin is the pigment responsible for skin color. Different ethnic groups have variations in the type and amount of melanin produced, which mainly determines skin - color differences. UV radiation exposure can affect melanin production but is not the primary cause of ethnic - based skin - color differences. Keratinocytes are related to skin structure rather than color. Hemoglobin affects skin color to a lesser extent compared to melanin, and the number of melanocytes is relatively similar across ethnic groups, but it's the melanin they produce that matters.

Answer:

the type and quantity of melanin produced