By the way, to add another question to this thread, I have seen many references to the fact that ancestry.com is "phasing" the autosomal DNA it is testing. The definition of phasing is: "Phasing is the task or process of determining the parental source of a SNP's alleles. A simpler way to put it, it is the process of trying to determine which DNA came from the mother, and which came from the father. The term is usually applied to types of DNA that recombine, such as autosomal DNA or the X-chromosome. The benefit of phasing is being able to identify which ancestor a segment was inherited from." I have no idea whether this might be a clue as to when their search engine turns up both a male and female couple and when it doesn't. Other companies don't yet all do this (some may), but some more technical people say that it can be useful. I guess we will know more when that raw data gets added.