Freckles are cute, but I don't have them. Do you?
freckes are visable marks that are easly seen on fair complection people
Yes, they do seem to be on fair complexions.
and believe it or not they do not increase in number over time
Freckle
gfrekles become darker wken exposed to uv rays
I thought they did!
Freckle
Freckles are clusters of concentrated melaninized cells which are most easily visible on people with a fair complexion. Freckles do not have an increased number of the melanin-producing cells, or melanocytes, but instead have melanocytes that overproduce melanin granules (melanosomes) changing the coloration of the outer skin cells (keratinocytes). As such, freckles are different from lentigines and moles, which are caused by accumulation of melanocytes in a small area.
Freckles can appear on all types of skin tones. Of the six Fitzpatrick skin
, but people with freckles generally have a lower concentration of photo-protective melanin, and are therefore more susceptible to the harmful effects of UV radiation. It is suggested that people whose skin tends to freckle should avoid overexposure to sun and use sunscreen.
Biology Genetics.
The presence of freckles is related to rare alleles of the MC1R gene, though it does not differentiate whether an individual will have freckles if they have one or even two copies of this gene. Also, individuals with no copies of the MC1R do sometimes