I was wondering if it is at all possible that distant Native American ancestors may fail to show up on the DNA tests. I notice that in the list of "Native American" on the tests for this and 23and me, no specific tribes are listed. I am descended from the Patawomeck Indian tribe , but over 300 years ago. Also, is it possible that Cherokee ancestry can be be misplaced as Ashkenazi Jewish? If anyone has any insights , please let me know. Thanks!