Red hair or ginger hair occurs naturally in one to two percent of the human population , appearing with greater frequency two to six percent among people of Northern or Northwestern European ancestry and lesser frequency in other populations. It is most common in individuals homozygous for a recessive allele on chromosome 16 that produces an altered version of the MC1R protein. Red hair varies in hue from a deep burgundy or bright copper , or auburn , to burnt orange or red-orange to strawberry blond. Characterized by high levels of the reddish pigment pheomelanin and relatively low levels of the dark pigment eumelanin , it is associated with fair skin color , lighter eye color , freckles , and sensitivity to ultraviolet light. Cultural reactions to red hair have varied from ridicule to admiration with many common stereotypes in existence regarding redheads. The term redhead has been in use since at least
Scientists have discovered eight genes linked to red hair, helping to solve a mystery of how redheads inherit their flaming locks. The study -- which also sheds light on blondes and brunettes -- is the largest genetic study of hair colour to date. It had been thought that red hair is controlled by a single gene, called MC1R. The new research sheds light on other genes that are involved. Previous studies had shown that redheads inherit two versions of the MC1R gene that leads to red hair -- one from their mum and one from their dad.
Geneticists have now firmly established that roughly two percent of the DNA of all living non-African people comes from our Neanderthal cousins. Neanderthals were a different species to us after all, and the thought of it seems distasteful to us today. Still, scientists are learning a great deal now about how active this Neanderthal DNA is in our bodies and the role that it might be playing in determining how we look and behave as well as our susceptibility to certain diseases.
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. In fact, research has found that an evolutionary adaptation means that they make it themselves and in a very efficient manner, reports The New York Post. As noted by French philosopher and author Augustin Galopin in his book Le Parfum de la Femme , a redheaded woman exudes the strongest natural scene of all hair colours, an earthy combination of amber and violet.
you are sooo gorgeous. u should come join me on RedTube. I post videos all the time. would love to masturbate to you some time and post the video on my page for you to watch. to show you how you inspire me. even cam to cam if you like