Board Thread:Naruto Discussions/@comment-45255175-20200501155826/@comment-9782468-20200504161428

Depends on the father, if the father had the recessive red gene as well it could happen, but that makes it far more unlikely lol.

I mean it was already unlikely that Kishi was thinking about how the genes worked out and even more unlikely that he made it so the red hair matched red hair in real life in terms of if it was recessive, so... Yeah my explanation is the least likely to be true for the series lol. It just draws on real life