J. Robert Oppenheimer’s grandson Charles Oppenheimer is revealing what scene from Christopher Nolan’s film he “definitely would have removed.”

During an interview with Time magazine published online Tuesday, Charles opened up about what he would have changed in Oppenheimer, which follows the story of his American scientist grandfather and his role in the development of the atomic bomb.

Although he noted that Nolan warned him that there were going to be parts in the movie “that you have to dramatize a bit and parts that are changed,” Charles would have preferred the scene where Cillian Murphy’s Oppenheimer tried to kill his professor by injecting cyanide into an apple not have been included in the film.

“The part I like the least is this poison apple reference,” he said, due to its historical inaccuracy. But Charles explained that he was previously not pleased with that section in the...