Peter's referring to what we call an "admixture report", an analysis of your autosomal DNA by locations: X percentage from A, Y % from B, Z % from C, etc. In these analyses, parts of your DNA are compared against reference databases for various populations. Obviously, accuracy of the analysis depends heavily on the reference databases. There are some problems with genetic ancestry mixtures: 1. What DNA can tell us doesn't match our expectations. DNA doesn't know political borders; genetics on one side of a border will look a lot like genetics on the other side. It especially can't tell the difference between English and Scots. (Both sides of this border are predominantly Celtic with infusions of Germanic and Scandinavian.) 2. Humans have been moving to-and-fro for many millennia, most especially the latest one. Everywhere a group went, it mixed DNA with other groups. That's made many modern populations (including "English") amalgams of more ancient populations. 3. DNA isn't inherited in a precise fashion. Different parts get passed down from parent to child; some siblings get different parts. It's therefore likely that full siblings will seem to differ in "ethnic makeup". I'd refer those interested to the People of the British Isles (POBI) study, which identified many sources for "British DNA". -rt_/) ---------------------------------------------------------------------- Date: Fri, 18 May 2018 17:47:57 +0100 (BST) From: "Peter Metcalfe" <Peter-redfern@runbox.com> Subject: [LAN] Re: Thoughts on DNA Testing To: "lancsgen" <lancsgen@rootsweb.com> Message-ID: <E1fJiXt-0004mj-6Q@rmmprod06.runbox> Content-Type: text/plain; charset="utf-8" I haven't had it done yet but I am not interested in contacting cousins, I just want to know which countries I came from in the distant past. Peter