A boy, on a trip to a futuristic zoo with his father, suffers an accident involving a gorilla.
He is rushed to surgery.
After a futile attempt, the surgeon informs the boy's father that he was unable to save the boy's arm, but that:
he still has two "good" arms remaining. The mutation is the result of a nuclear war.
Any direction is appreciated.
By way of further information, I am a high school librarian, and one of my students is a voracious consumer of Sci-Fi. I've fed him much of what I have, but we were talking about how I started to read Sci-Fi, and this was the story that started it all. It introduced me to the genre and also the beauty of a well-written short story.