How does UV act as a selective pressure on human skin color at the equator? UV light... by https://padlet.com/pebblebarbero/d6qz24x00loaktb2 en-us 2024-09-05 13:59:36 UTC 2025-01-30 20:51:01 UTC hello@padlet.com Folate=reproductive success https://padlet.com/pebblebarbero/d6qz24x00loaktb2/wish/3310356298 UV light destroys folate.


People who are exposed to high levels of UV over a long period of time show a decrease in serum folate compared to people who are not exposed to high levels of UV rays. UV rays are higher closer to the equator, darker pigmentation or more melanin is needed to protect folate.

]]> 2025-01-30 20:47:09 UTC https://padlet.com/pebblebarbero/d6qz24x00loaktb2/wish/3310356298 https://padlet.com/pebblebarbero/d6qz24x00loaktb2/wish/3310356480 Not enough melanin to protect the folate from the UV radiation since it destroys folate.

]]> 2025-01-30 20:47:24 UTC https://padlet.com/pebblebarbero/d6qz24x00loaktb2/wish/3310356480 pebblebarbero https://padlet.com/pebblebarbero/d6qz24x00loaktb2/wish/3310356660 Damaged folate leads to decrease in reproductive success b/c folate is necessary for embryonic development and sperm production. High UV light at the equator selects for dark pigmentation b/c the higher amount of melanin protects the folate from the UV radiation.

]]> 2025-01-30 20:47:37 UTC https://padlet.com/pebblebarbero/d6qz24x00loaktb2/wish/3310356660 https://padlet.com/pebblebarbero/d6qz24x00loaktb2/wish/3310356733 folate is important for reproduction but with high UV radiation reproduction success decreases

]]> 2025-01-30 20:47:45 UTC https://padlet.com/pebblebarbero/d6qz24x00loaktb2/wish/3310356733 https://padlet.com/pebblebarbero/d6qz24x00loaktb2/wish/3310356947 UV radiation breaks down folate in humans and humans not having enough folate can lead to reproduction failure

]]> 2025-01-30 20:48:02 UTC https://padlet.com/pebblebarbero/d6qz24x00loaktb2/wish/3310356947 UV Light https://padlet.com/pebblebarbero/d6qz24x00loaktb2/wish/3310356970 Breaks down folate, so melanin is increased to protect it. Melanin also absorbs vitamin D

]]> 2025-01-30 20:48:04 UTC https://padlet.com/pebblebarbero/d6qz24x00loaktb2/wish/3310356970 https://padlet.com/pebblebarbero/d6qz24x00loaktb2/wish/3310357400 folate needed to reproduce

]]> 2025-01-30 20:48:38 UTC https://padlet.com/pebblebarbero/d6qz24x00loaktb2/wish/3310357400 https://padlet.com/pebblebarbero/d6qz24x00loaktb2/wish/3310357501 the UV radiation causes the folate to be destroyed

]]> 2025-01-30 20:48:45 UTC https://padlet.com/pebblebarbero/d6qz24x00loaktb2/wish/3310357501 https://padlet.com/pebblebarbero/d6qz24x00loaktb2/wish/3310357519 Uv radiation can disrupt the reproductive success

]]> 2025-01-30 20:48:46 UTC https://padlet.com/pebblebarbero/d6qz24x00loaktb2/wish/3310357519 🤓 https://padlet.com/pebblebarbero/d6qz24x00loaktb2/wish/3310357542 breaking down folate in the bloodstream

]]> 2025-01-30 20:48:48 UTC https://padlet.com/pebblebarbero/d6qz24x00loaktb2/wish/3310357542 Uv https://padlet.com/pebblebarbero/d6qz24x00loaktb2/wish/3310357988 Folate destroys uv

Vitamin d makes uv

]]> 2025-01-30 20:49:22 UTC https://padlet.com/pebblebarbero/d6qz24x00loaktb2/wish/3310357988 https://padlet.com/pebblebarbero/d6qz24x00loaktb2/wish/3310359392 DNA damage and melanin

]]> 2025-01-30 20:50:54 UTC https://padlet.com/pebblebarbero/d6qz24x00loaktb2/wish/3310359392 Selective Pressure https://padlet.com/pebblebarbero/d6qz24x00loaktb2/wish/3310359483 Folate is required for a healthy pregnancy. UV radiation destroys folate

]]> 2025-01-30 20:51:00 UTC https://padlet.com/pebblebarbero/d6qz24x00loaktb2/wish/3310359483 https://padlet.com/pebblebarbero/d6qz24x00loaktb2/wish/3310359676 Too much UV can cause the folate to be destroyed especially if there’s not enough melanin.

]]> 2025-01-30 20:51:18 UTC https://padlet.com/pebblebarbero/d6qz24x00loaktb2/wish/3310359676