| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| Unlike most birds, ratites like the ostrich can't do this | fly | $200 | DJ | BIOLOGY | 1993-06-29 | #2047 | |
| The principles of mutation were discovered by Thomas Hunt Morgan working with drosophila, this tiny insect | the fruit fly | $400 | J | BIOLOGY | 1991-09-04 | #1608 | |
| Rheas, emus, & cassowaries are classified as ratites because they can't do this | fly DD | $1,000 | DJ | BIOLOGY | 1987-01-06 | #542 |