Board Thread:Theories and Speculation/@comment-25319479-20171101152711/@comment-734582-20180109181814

Gagua2028 wrote: Couldn't there be a possibility that just like Hashirama awakened wood release kekkai genkai out of the blue with no bloodline trait a KKG IS a bloodline trait. For it to work, you need the genes. You couldn't just mutate such a KKG out of the blue.

Though sure, a mutation could've made the KKG inert in most people carrying the KKG, and Moegi might've had a mutation that undid it.