Talk:Nightblood/@comment-25205238-20180526164338/@comment-69.145.120.37-20180723012014

No, it's heavily implied that nightblood is a recessive trait. The parents would be red-blooded carriers (each parent would have to carry one nightblood allele and the child inherits that allele from each parent to have 2 nightblood alleles). It may be that the first generation of 'born' nightbloods came from a nightblood parent. But after that, not so much. If they were, there wouldn't be any reason for the flamekeepers to 'search' for nightblood children. They'd already know who was going to give birth to more nightbloods. Also, since all the nightbloods are found as children, brought into the enclave, then fight to the death, it's unlikely any of them are having any children of their own.