感觉单一起源更合理。皮肤是最容易变异的基因，但人类智商差别不大，更符合智人只有万年的进化史。

来源: Ownthought 于 2024-03-06 06:26:18 [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.