In 1968 Motoo Kimura rekindled the debate with his neutral theory of molecular evolution which claims that most of the changes in the genetic material are caused by genetic drift.

• 1968年木村资生提出中性分子进化理论，重新引起了辩论。他声称，遗传物质发生的大多数变化是由遗传漂变造成的。