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What are freckles? Detailed answer

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What are freckles?

To understand what freckles are and how they appear, we must understand what gives skin its color in the first place.

The most important pigment in the formation of skin color is melanin. We can say that the difference in skin colors of different races depends entirely on the amount of melanin.

By the way, in the lower forms of life, it is melanin that makes it possible for some fish and lizards to change their color. Its most important function for humans, besides color management, is to protect us from the harmful effects of too much exposure.

Melanin is produced by a network of special cells that are scattered throughout the lower layer of the epidermis - the thin outer part of our skin. These cells are called "melanocytes". Now we come to the question: what are freckles? So, freckles are just clusters of melanocytes in specks. This is why freckles have such a brownish color, the color of melanin pigment. Why do some people have freckles and others don't? The reason is heredity. Our parents decide for us whether we get freckles!

The color of freckles (actually the color of the melanin in them) can range from light tan to dark brown, depending on sun exposure and heat. Not only can sunlight darken freckles, it also produces new melanin.

Author: Likum A.

 Random interesting fact from the Great Encyclopedia:

Which animals can change houses in a chain?

When a hermit crab grows out of its shell and goes in search of a new home, a situation may arise when its relatives move along the chain. Other hermit crabs inspect the abandoned shell, and if they find it too big, they wait. Moreover, as new candidates arrive, a queue is formed, ordered by the size of individuals. When a crayfish finds the first shell suitable, it leaves its largest crayfish behind and starts a chain of movements.

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