"SimmerGeorge;c-17750195" wrote:
@Chicklet453681 That happens if two people have the recessive gene for red-hair in their DNA from past generations and if they have a baby there is a high chance the two recessive genes overpower the dominant one. It's the reason why red-haired people don't go extinct, if you've ever thought about it.
Also a recessive gene, doesn't mean it will never be passed on to the child's actual appearence, it only means it will be much less likely to be passed on instead of the dominant one. That doens't make the red-hair "dominant", it's still a recessive gene. It can still get passed on though
Source: Biology classes
If that's the case then how does this happen: my mum has dark brown hair, there is no blonde at all in her family, and yet both me and my brother are blonde.
Also if I were to have a child and they have dark brown hair like my mum's then that would mean brown is recessive in me to have passed on to my child, and yet my hair is still blonde, making blonde a dominant gene in me.
Dominant genes are the visible features we have while recessive is what is carried over to the next generation.
It's not that one gene is more or less likely to be passed on, they all have equal chance. We all get half from our mother and half from our father. What genes we inherit is all luck of the draw, you either got it or you didn't. Meaning each gene has a 50, 50 chance of being inherited.
Source: DNA testing sites
