How do we find the DNA signature of ancestors who lived long ago?
A4. DNA test results from several lines of living descendants (or people who believe they are descendants) of a common ancestor are compared to each other. An analysis of the results can paint a picture of the ancestor’s DNA signature. The most effective and accurate method involves determining signatures of recent ancestors first and then comparing their results to determine the signature of more distant ancestors as we work our way back in time. The accuracy of the results depends on the number of test results available, the distance (in relationship) of the test subjects and the availability of paper trail information to help in the analysis.
