Redhead in blue dress
"Major locus for red hair color linked to MNS blood groups on chromosome 4". "Ginger Pride festival will be held in 2016 to celebrate redheads". 55 Other research publications have concluded that women with naturally red hair require less of the painkiller pentazocine than do either women of other hair colors or men of any hair color.
Krude H, Biebermann H, Gruters A (June 2003). 2 Red hair can originate from several changes on the MC1R-gene. Retrieved Grant, Michael; Hazel, John (2002).