I believe both Ancestry and FTDNA have some good explanatory material about how DNA works. If you "google" DNA, you can find videos from various places, some relatively easy to understand and others not. To answer your question, you and your brother will not have all the same matches. We did 4 kits for siblings in my family. Many matches are the same, but a number are not. It has to do with with how the DNA sequences are arranged. You need to have a certain number in a row that match with others. Siblings do not inherit exactly the same DNA unless they are identical twins, and I am not sure whether or not there can be variations there. Margaret Scheffler -----Original Message----- From: Lori via Sent: Wednesday, July 06, 2016 1:29 PM To: 'ROOTS-L' Subject: [ROOTS-L] Ancestry DNA I have a basic (very basic) question about the DNA test. I know there are lists to discuss the DNA tests, but they aren't basic enough for me. Later when I have more time I'm will delve into this and get up to speed. I took the Ancestry DNA test for myself. We are going on a trip where we'll see a family member and I bought the test for him. He agreed to take it. He's my brother. Is it possible that the test will show him to be related to people that I'm not related to? And BTW, is there a list on rootsweb or someplace else which has discussions about DNA which are more basic? ~Lori