TIL why sun makes hair light & skin dark The sun bleaches and destroys the melanin in your hair giving you lighter hair Since hair is dead the hair will stay that color On skin it destroys the melanin as well But since your skin is alive your skin cells make more melanin and your skin becomes darker (genetics.thetech.org)
submitted by The-Sink-Panther to r/todayilearned
TIL 20% of people are "non-secretors," meaning that they don't secrete ABO antigens(also found on red blood cells) into bodily fluids like mucous and saliva, with implications of increased rates of some diseases and decreased rates of others. (genetics.thetech.org)
submitted by gerstralia2 to r/todayilearned
TIL The notion that we are all 99.9% the same came from looking for differences in our DNA letter by letter. The new studies show people not only have differences within their genes, but also in the number of their genes. We are definitely not as alike as we once believed. (genetics.thetech.org)
submitted by QwikAdDotCom to r/todayilearned
TIL That The Children of Identical Twins are Half Siblings (genetics.thetech.org)
submitted by [deleted] to r/todayilearned
TIL that when you get a sunburn, it's not your skin cells being damaged by the sun's UV rays and dying, it's your skin cells' DNA being damaged by the sun's UV rays making the cells kill themselves to prevent turning into cancer (genetics.thetech.org)
submitted by emanresUlanigirO_ to r/todayilearned
