The boy had been adopted in 1984, along with his biological brother, Sam, who is now 8.

Despite Chris not being her biological brother, she has never thought of him as anything other than her little brother.

He forgot the names of his biological brother and sister.

Peyton reconnects with her biological brother Derek, who has returned from the war.

Adrian was adopted into a very religious family together with his two biological brothers, joining the nine children of the family.

He starts out as a celibate who cannot truly live because of everything that his biological brother has lost.

Only the older biological brothers influenced sexual orientation; there was no effect of adopted siblings.

He has one biological brother, Greg, and five step-siblings.

You two may not be biological brothers, but your temperament's very similar.

Bowen even tried to pass Crozier off as his biological brother when interviewed for this article.