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  • Hair color is primarily genetic, and red hair is caused by mutations in the MC1R gene. The gene for red hair also causes an increased sensitivity to sunlight and a reduced sensitivity to anesthesia. Contrary to internet rumors, redheads are not going extinct! Famous redheads include Queen Elizabeth I and Malcolm X.

    Redheads: The Genetics of Hair Color

    Redheads: The Genetics of Hair Color

    by Leah Lefler89

  • Most commonly, you see brown, blue, or hazel eyes, but some people, whether it be luck or a medical condition, wind up with really cool and rare eye colors.

    6 Rare and Unique Eye Colors

    6 Rare and Unique Eye Colors

    by Tatiana116

  • Though there isn't much research data available, we can confidently say that the rarest eye color in the world is Green. Amber, Violet/Red and Black are also extremely rare.

    Rarest Eye Color in Humans

    Rarest Eye Color in Humans

    by Edmund Custers526

  • The discovery of a single tooth led to the belief in an ape-like creature had once roamed the plains of the New World.

    Nebraska Man or a Pig’s Tooth?

    Nebraska Man or a Pig’s Tooth?

    by Rupert Taylor0

  • When I received results of genetic testing from 23andMe, I not only learned about our family history going back 800 years, but I also got to see interesting comparisons between my sister and me. This information gave us both a better understanding of issues we had while growing up.

    A Review of DNA Testing to Discover Your Ancestry and Health Risks

    A Review of DNA Testing to Discover Your Ancestry and Health Risks

    by Glenn Stok20

  • About 10 percent of the population is left-handed and experts are unsure exactly why this is so.

    Left-Handedness

    Left-Handedness

    by Rupert Taylor3

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