What can DNA tests really tell us about our ancestry? – Prosanta ChakrabartyPosted in Health/Medicine/Genetics, Media Archive, Videos on 2021-11-11 20:23Z by Steven |
What can DNA tests really tell us about our ancestry? – Prosanta Chakrabarty
TED-Ed
2020-06-09
Prosanta Chakrabarty, Professor of Ichthyology, Evolution and Systematics
Louisiana State University
Directed by Artrake Studio
Dig into the science of how ancestry DNA tests work, their accuracy, and why tracing ancestry is so complicated.
Two sisters take the same DNA test. The results show that one sister is 10% French, the other 0%. Both sisters share the same two parents, and therefore the same set of ancestors. So how can one be 10% more French than the other? Tests like these rely on our DNA to answer questions about our ancestry, but DNA actually can’t tell us everything. Prosanta Chakrabarty explores the accuracy of DNA tests.