Question: I have red hair.None of my brothers mam or dad have red hair.How is it possible how do I have a gene for red hair

Eoin McEvoy answered on 5 Mar 2018:

The short answer is that both your parents have a red hair gene, but they don’t have red hair because their second gene is stronger (more dominant). If this happens with parents, there is a 25% chance that one of their children will get 2 red hair genes, and then have red hair (you!). In other words, if they had 4 children, most likely one of them would have red hair.