What happens when a person has a red beard, paired with a brown head of hair? 🤔
It's relatively rare to see a redhead — just 1% to 2% of humans are natural gingers. So, you might do a double-take if you see a man sporting a reddish or even a full-blown red beard, even though he is clearly not a carrot top.
This follicular fluke hasn't escaped the notice of researchers like Nina Jablonski, professor of anthropology at Penn State University, whose research has focused on the biology of hair hues."I have observed many, especially younger, men with red beards and red hair and some with reddish beards and light brown, blond or red-blond hair," she told Live Science.
One role of the MC1R gene is to code for a protein called melanocortin, whose job is to convert the red pigment into the black one. But if a person has a double mutation in this gene, its resulting proteins aren't as effective, which lead to red locks. "This will almost certainly be due to the differential expression of MC1R in the follicles of beard hair versus scalp hair resulting in the production of a different mixture of dark brown eumelanin and yellow-red pheomelanin," Jablonski said.
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