Yes of course. But it is helpful to recognize that ... and here race is a very good example .. there are actually 3,054,815,472 DNA base pairs. Which ones make up your race? What if you have 32 ancestors all of different historical races, then what are you? It is very fuzzy, and where you draw the line defines the group, so the group is by definition at least partially made up. Gerrymandered. Therefore, don't put too much stock in it.