My father adopted me as a baby, and I grew up to know him and his family as my family. (My mother is my biological mother.
Later I have discovered my biological fathers family. How can I register this? I want my adoptive father to list as my father, but without loosing the biological fathers line? Now my father is listed as my step father, but that feels very wrong, since he has adopted me. Or should I just loose the bio-line and note my adoptive father as my only father?