Question

In your own words, explain why the keratinocytes do not produce melanin?

Answer 1

Simply because most( 90%) keratnocytes (superficial keratinocytes) are keratinalized, without nucleus. They are mostly dead cells with cytoplasm made up of mostly keratin ;which is more protein than cells.

Melanin is produced by melanocytes but Keratinocytes lacks melanocytes.

Thus Keratinocyte with no nucleus, with dead cells,with cytoplasm of keratin, and most importantly with no melanin secreting cells of melanocytes can not produce melanin.

Step-by-step explanation:

Answer 2

Melanocytes produce Melanin. Keratinocytes assist in this function.

Step-by-step explanation:

Keratinocytes contribute to protecting the body from ultraviolet radiation (UVR) by taking up melanosomes, vesicles containing the endogenous photoprotectant melanin, from epidermal melanocytes. Each melanocyte in the epidermis has several dendrites that stretch out to connect it with many keratinocytes. The melanin is then stored within keratinocytes and melanocytes in the perinuclear area as supranuclear “caps”, where it protects the DNA from UVR-induced damage.