One more thing: Jared Diamond (of “Guns, Germs, Steel” fame) transferred the exact, same method to linguistics, using it to discover the ancestry of Pacific Isl

One more thing: Jared Diamond (of “Guns, Germs, Steel” fame) transferred the exact, same method to linguistics, using it to discover the ancestry of Pacific Islanders using features of their respective languages instead of letters of DNA. The result is both a tree of their (cultural) ancestry, and a map of their migration/expansion from island to island.