These notes are for participants in the Society of Australian Genealogists' program, Analysing your AncestryDNA results . Others are welcome to use these notes for their personal research. Please contact me at chrisw9953[at]gmail[dot]com for other uses. I'll strive to update the notes as there are further developments or my understanding of the area grows. AncestryDNA is autosomal testing - often called cousinship testing. You can read more about atDNA testing at Louise Coakley's excellent site - click HERE. Here's a pedigree chart provided by Louise. Any one of your ancestors could have passed atDNA down to you but, the more distant the ancestor, the less likely you'll have some of their atDNA. You don't need to know a lot of terminology but here are some you need to understand- It's essential that you get the relationship between the tester and the "cousin" the atDNA is shared with correct. So the "cousinship chart" is important to un