GENERAL HISTOLOGY

Detailed explanation-1: -Freckles and moles are seen where melanin is concentrated in one spot. Melanin ranges in color from yellow to brown to black. More melanin is produced when the skin is not exposed to sunlight. The stratum basale cells phagocytize the melanin produced by the melanocytes and it accumulates within them.

Detailed explanation-2: -Freckles and moles are different in several ways: Moles may be flat or raised, while freckles are flat. Freckles are usually brown in colour, moles can be brown, black, pink, the same colour as the surrounding skin, and even blue or grey. Moles are genetically determined, and they can grow on any part of the body.

Detailed explanation-3: -freckles and moles are seen where melanin is concentrated in one spot.

Detailed explanation-4: -Answer and Explanation: All of the statements about melanin are true EXCEPT that it (b.) Decreases in concentration within cells during exposure to the sun. Melanin is produced from the amino acid tyrosine through a process known as melanogenesis.