I have noticed that several 'surnames' I am researching have programs to test willing participants for their DNA. These programs are directed to 'male' participants only. I would like to hear some educated input into why are the males only being tested? Is there some scientific reasoning for this? Also - can someone explain where they get the DNA to check against? I'm picturing they have dug up someone's remains that they compare with. Isn't also this process very expensive? I am not well informed in these matters and would appreciate learning from others on the list about this method of finding one's ancestors. Thanks, Edith Mooreedith@aol.com