My son's biological father and his family is unknown. Both my son and I took Ancestry DNA tests. Then I went through his matches for "shared matches" - if I didn't show up, I assumed the match was from his paternal side. Is this assumption correct?
Now we've both uploaded our raw data to GEDmatch and FTDNA. Is there a one-to-many test for my son's dna that excludes matches to me?
Is there some other DNA test we should do?