“Just like dear old Dad, you’ve devoted your time to intellectual pursuits. You gain an additional 5 points to both the Science and Medicine skills.”— In-game description
Daddy's Boy or Daddy's Girl (depending on the Lone Wanderer's sex) is a perk in Fallout 3.
Effects
Each rank of this perk will permanently increase the player character's Science and Medicine skills by five points, up to a maximum of three ranks.