Jan 01, · Redheads are more often mutants. The recessive MC1R gene that is in charge of the red hair, MC1R, is a genetic mutation. Genetic variations in MC1R gene are common in people with red hair. Rare One. Image via eazye.info Redheads are incredibly rare. Just 2% of the world’s population has red hair which comes to around million.
A study found that redheads were more anxious about dental visits, had more fear that they would experience pain during a visit, and were more than twice as likely to avoid dental care than Author: Rachael Rettner.
Aug 18, · Redheads need 20 percent more anesthesia than their dark-headed counterparts. Because the MC1R gene belongs to the same family of genes that play a role in pain, the mutation causes redheads to be more sensitive to it.
Red hair has far more of the pigment pheomelanin than it has of the dark pigment eumelanin. The genetics of red hair appear to be associated with the melanocortin-1 receptor (MC1R), which is found on chromosome Eighty percent of redheads have an MC1R gene variant.