So complete speculation as far as the mound builders being genetically more similar to native Americans than some other haplogroups, then. In the same vein, I recall a lot of others saying the Smithsonian and other organizations were involved in collecting and excavating a lot of the mounds. So they would know but are keeping it under lock and key.

So complete speculation as far as the mound builders being genetically more similar to native Americans than some other haplogroups.