Question

which of the following is not an effect of ultraviolet radiation?
loss in skin pigmentation
increased activity by melanocytes
production of cholecalciferol within epidermal cells
chromosomal damage in germinative cells or melanocytes
reduced amounts of elastic fibers in the dermis

Explanation:

Ultraviolet radiation stimulates melanocytes, leading to increased skin pigmentation (not loss). It also causes melanocyte activity increase, production of cholecalciferol in epidermal cells, chromosomal damage in germinative or melanocyte cells, and reduction of elastic - fibers in the dermis.

Answer:

loss in skin pigmentation