Orla Bloom
Orla Bloom voted up Julii Brainard's answer
What Are The Genetics Of Red Hair?
The genes for red hair are very common in the population, but they are recessive (meaning that they are dominated by any other hair colour). So if you have some genes for brown hair and some genes for red hair, you will end up with brown hair yourself. If you have children with someone else … Read more
Orla Bloom
Orla Bloom voted up sherlin smith's answer
What Are The Genetics Of Red Hair?

The MC1R recessive variant gene that gives people red hair and non-tanning skin is also associated with freckles, though it is not uncommon to see a redhead without freckles. Eighty percent of redheads have an MC1R genevariant, and the prevalence of these alleles is highest in Scotland and Ireland.