n.合作者
However, over a wide range of conditions, the wild-type cooperator can also invade a population of cheater cells. 此外，不論開始的酵母種群數(shù)量是多少，最后都會(huì)達(dá)到一種平衡狀態(tài)，合作者和欺詐者同時(shí)存在。
