Board Thread:Theories and Speculation/@comment-25319479-20171101152711/@comment-734582-20171108101913

Khaotic Twist wrote: I suspect that the more diluted the clan gets, the less chance of them acquiring the bloodline trait. I think the 2nd or 3rd databook actually says that while KKG are genetic, there's an element of chance to it. Even if both parents have a KKG, doesn't guarantee their kid has it.

Besides, with such small sample sizes (1 natural wood release user), you basically have the mother of all sample biases. Even Dust Release, as a Kekkei Tota, has more users.