2009-04-08, 03:35 AM
RDal Wrote:I was sitting back at my brother's house looking at his black hair. I then turned my attention to my own brown hair. I wondered to myself, how can this be? I remember in school I was learning about genetics, with alleles and such. I was taught that both blonde and black hair are recessive to brown. My mother is naturally blonde and my father is naturally black. If they both display the recessive gene, then obviously they must be homozygous and not have the brown gene in them. For me to have brown hair, I would have to have it in me. But since neither of them have it... how can I o.O
I know it is probably a simple question, but I don't claim to be a geneticist. It was just something I've been wondering. And also, it is 100% certain that they are both my parents XD
I am no geneticist either, but I would think that there is either 1) more than two types of alleles for hair color or 2) more than one gene control hair color.
And regarding the question about your parents, no: no one can ever make that statement and be 100% sure. However, you can be reasonably sure that they are your parents, and the fact that they have different color hair does not disprove anything, so you shouldn't worry about it.