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Posted by duddy   September 17, 2015   14842 views

It has to do with a single gene! More than a decade ago, researchers discovered that one gene (MC1R) on chromosome 16 plays an important role in giving people red hair. MC1R task is to make the protein melanocortin 1. This protein plays an important role in converting red pigment into black pigment. If you end up with only one mutated MC1R gene, red hair can appear in unwanted places, like your beard. When someone inherits two mutated versions of the MC1R-gene (one from each parent), less red pigment is converted into black pigment.

beard hair man genetics genes protein mutation hereditary
Posted in Interesting Facts
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This happens to me too! Great scientific explanation
Posted on Dec 24, 2015 by bio_man
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