Board Thread:Theories and Speculation/@comment-3568954-20141110160729/@comment-3568954-20141110162239

Rage gtx wrote: For time of being we don't know. But Naruto's childrens whiskers tend me to belive that chakra indeed affect one's DNA.

Didn't you read Rayzur's post it says this

Roshi was stated to gained the ability to MIX earth and fire to create lava no just GIVEN lava. Naruto gained the ability to use basic and advanced not just through bijuu but also through the Rikudo Sage mode which granted him the Knowledge and ability to understand the very nature of chakra, hence him using ying-yang release without a bijuu (ref. 4th DB)

meaning everything i said is correct