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The Science of Skin Color
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Understand the science behind our skin colour and how we evolved over time with variations in our skin.

Unacademy Bytes
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Unacademy user
It's very brilliant idea to visualize the history and other facts to remember it quickly but I would suggest an idea if it's possible, could you please arrange it as a month wise and too in one liner form as a PDF or doc so that it will be greatful to go for quick revision of all.
Sheetal Sharma
a year ago
https://unacademy.com/lesson/most-important-gk-questions-part-1-in-hindi/KHJRJBH0 ( most important gk questions for SSC chsl and cgl
super explanation thank you
amazing fact explained in an interesting way by an awesome educator thank you
Roshan Gupta
a year ago
indeedly,they are awaring to the various things which in our environment.
Very interesting and informative. Hello Unacademy Bytes team, Also bring up second part of this very video which explains How the High Melanin people in North compensate for Vitamin D naturally, or how body actually adapts to such unlikely conditions?
interesting topic.. Thank be Mam your voice is amazing...????
loved it it was really interesting
  1. HUMAN BRAIN


  2. HUMAN BLOOD*.


  3. HUMAN BONES


  4. Why isn't it the same with our skin color?


  5. THE SCIENCE BEHIND SKIN COLOR


  6. Source: Dept. of human evolutionary biology


  7. Different wavelengths of light are reflected or absorbed by a pigment on the top layer of our skin Melanocyte Melanin MELANIN


  8. Eumelanin Pheomelanin Melanocyte Melanin The more the Eumelanin, the darker the skin


  9. North Pole Arctic Circle 60 N Low Angle of Lin Incoming Sunlight 30 N Tropic of Cancer Equator Sunlight Strikes Sun Most Directly Tropic of Capricorn 30 S 60 S Antarctic Circle Low Angle of Sun Incoming Sunlight Atmosphere South Pole


  10. Arctic Circle 60 N Low Angle of Lin Incoming Sunlight 30 N Tropic of Cancer 50,000 years ago Equator Sunlight Strikes Sun Most Directly Tropic of Capricorn 30 S 60 S Antarctic Circle Low Angle of Sun Incoming Sunlight Atmosphere South Pole


  11. Before After: Incoming UV photon Damage to DNA when skin is overexposed


  12. UVA UVB UVA UVB The melanin in skin determines how protected you will be from the sun


  13. Some of our ancestors who were adapted to the tropic spread to other parts of the world


  14. What happened in the north?


  15. Vitamin In


  16. Risk of Vit D deficiency due to lack of optimal UV exposure