Hi everyone! New to this forum and was hoping to find some advice. My father believes he was adopted. I had him get a 23andme account so I have his DNA on file with them. He thinks he was adopted by his father's sister. He was raised with 3 sisters who each had children (men & women). I am thinking if I sequence one of the kids mtDNA I can compare to him to see if he is a match. But is there a better way to do it? Perhaps I can have one of his potential nephews/nieces get a 23andme account so we can do a broader comparison.