I want to do a DNA test to find out more about my ancestry - I'm mixed race - but I'm wondering whether it might be better to ask my 16-year-old DS1 to do it instead. That way he could have information about his paternal line as well as from my side of the family. The alternative would be for both DH and I to do the test but I don't know whether that would provide significantly more information than they would get from our child. I haven't mentioned it to DS1 yet, AIBU to ask him whether he's interested?