Question

ethnic differences in skin color are primarily caused by differences in ____________. multiple choice the number of melanocytes the type and quantity of melanin produced uv radiation exposure the quantity of hemoglobin carried in the blood the number of keratinocytes

Explanation:

Skin color is mainly determined by melanin. Different ethnic - groups have different types and quantities of melanin production. The number of melanocytes is relatively similar across ethnicities. UV radiation exposure can affect melanin production but is not the primary cause of ethnic - based skin - color differences. Hemoglobin in blood affects skin color to a lesser extent and keratinocytes are not the main factor for ethnic skin - color differences.

Answer:

the type and quantity of melanin produced