How can a red-head (which is 2 resessive genes) have individual black hairs?

Question

I have red hair. I know this is an oversimplification, but to my understanding there is a set of at least 3 gene sets which deal with hair color. Brown/blond (blond recessive) non-red/red (red recessive) and a set dealing with how dark the color is (all dark makes black hair)

My mother has blond hair (Bl-Bl/Nr-R/20% dark), my dad has black hair (Br-Br/Nr-R/100% dark) I ended up inheriting both resessive reds to end up with a copper-red hair (Br-Bl/R-R/60% dark) Yet a few of my hairs on my arms, or legs grow in pitch black. How does this happen? Is some of my cells dna actually slightly different than other cells?

Answer 1

all of ur DNA is the same in every cell of ur body, if not u wouldnt b human, the difference is that a diff part of ur dna may control the hair on ur arms from the gene that controls the hair on ur head... to put an analogy its like buying a red toyota, then saying "why is the interior black?, shouldnt it b red?"... dont know if that helps or hurts, lol.

Answer 2

no one's hair is all the same color, we all have several different shades on our heads. My husband's hair is very dark brown, almost black, but out in bright sunshine I see a lot of red in it.