Introduction to DNA by Frank Baxter and Bell Labs.
| Actor | Role |
|---|---|
 Frank BaxterHimself | Himself |
 Mel BlancShip's Voice (voice) (uncredited) | Ship's Voice (voice) (uncredited) |
 Don GradyLeft handed boy (uncredited) | Left handed boy (uncredited) |
 Chet HuntleyHimself (opening narration) (voice) (uncredited) | Himself (opening narration) (voice) (uncredited) |
 Charles SeelQuestioner (uncredited) | Questioner (uncredited) |