DNA clue to early human migrations in America

摘要

In the 14 July issue of Nature there is an intriguing account of an investigation into the early migrations of humans from southern Alaska into new territories in Illinois,California,Mexico,Ecuador and Chile.Human remains,including a mandible and some teeth,were discovered in 1996 in a cave on Prince of Wales Island off the coast of Alaska.They yielded a radiocarbon date of 10,300 years before present.