It explains why only one-in people have flame-coloured locks and could open the door to breakthroughs in forensic science and medicine. Only about million of the world's eight billion people are redheads, with most being brunettes or blondes. Previously, it was thought the root cause was a single gene identified as MC1R inherited from the mother and father. But now a major study of DNA from almost , Britons has shown it's much more complicated than that. This could help crimefighters build more accurate photofits of suspects.
How the redhead gene evolved due to lack of sunlight
How the redhead gene evolved due to lack of sunlight | aruhibacigars.com
By Susannah Cahalan. December 2, am Updated December 7, am. Amy Adams is a lucky woman. Martins , out now, by scarlet-haired writer Erin La Rosa. Research indicates that redheads have higher thresholds for pain and need less vitamin D than the rest of us thanks to the MC1R gene mutation, which gives their hair its hue.
Hair color gene study sheds new light on roots of redheads' locks
It turns out that there are a number of special genetic qualities that give those lucky redheads a surplus of evolutionary advantages. A study at the University of Louisville revealed that MC1R can amplify the activity of the genes which detect and respond to temperature changes, meaning that redheads are likely to be shivering more than most this winter. The rare MC1R gene mutation also means that flame-haired people need less vitamin D than the rest of us.
Author: Maciamo Hay. Red hair, a Celto-Germanic trait? Where is red hair more common? The 45th parallel, a natural boundary for red hair? Where did red hair first arise?