Then, as that species diversified to occupy new ecological niches with the assistance of themutation in question, it would come to be found in a group of species that hada common ancestor .

• 然后，正由于物种在这个尚未有定论的突变的帮助下，分化适应各种新的生态环境，就会出现在一组物种里存在过一个共同祖先的情况。