Overview
College prof Peter Boyd tries to salvage his professional and personal reputation by using a lab chimp to prove that environment trumps heredity in behavioral development.
| Actor | Age then | Age now | |
|---|---|---|---|
 | 40 | June 5, 2004 (93) | |
 | 24 | December 18, 1971 (45) | |
 | 48 | April 21, 1983 (80) | |
 | 25 | March 19, 1979 (53) | |
 | 34 | January 9, 1997 (80) | |
 | 61 | May 31, 1958 (68) | |
 | 40 | November 29, 1986 (76) | |
 | 62 | September 15, 1961 (73) | |
| 72 | November 18, 1954 (76) | |
 | 48 | February 19, 1964 (61) |