Red hair is a very rate occurrence as it happens naturally in 1–2% of the human population.
hmm interesting. I like redheaded girls so much. maybe that's why. does having red hair come with anything else?
Well, they ones you like probably dyed their hair,  unless they are northern or western European ancestry and it's just 2–6% 
I can spot a natural redhead anywhere because I have xray vision. where did red hair come from originally?
The scientific explanation for it is that two copies of a recessive allele on chromosome 16  produces an altered version of the MC1R protein
whoa sounds complex. does having red hair affect personality like everyone thinks it does??
No they don't, But here is a simpler explanation, it's as a result  high levels of the reddish pigment pheomelanin and relatively low levels of the dark pigment eumelanin.
mmmm ok. well I always thought that redheads were smarter because their brains were on fire
Well, no but  many common stereotypes exist regarding redheads and they are often portrayed as fiery-tempered.