Describe the amounts and location of melanin as observed in

Describe the amounts and location of melanin as observed in dark vs light skin? _______

Solution

Melanin is one of the natural pigments found in most organisms. It is produced by oxidation of tyrosine and then its polymerization. It is produced in a group of cells, specialised for melanin production, known as melanocytes.

Has three types: eumelanin, pheomelanin, and neuromelanin. Eumelanin is the most common type, of the three, which has two subtypes—brown eumelanin and black eumelanin.

Pheomelanin is responsible for red hair. These impart pink to red hue depending on concentration in the cells. These are concentrated in the lips, n-I-p-ples, and the male and female reproductive parts. Trichomes are responsible for red hair.

Eumelanin - independent small amount of black eumelanin causes grey hair . Independent small amount of brown eumelanin results in blonde hair . The body continues to produce black eumelanin, thus resulting in grey hair .

Neuromelanin - binds irons and other transition metals. Not responsible in pigment production.