Final answer:
Vincent's identity is called into question when he poses as Jerome Morrow at Gattaca, and he is in jeopardy of being exposed when his genetic material is found at a murder scene.
Step-by-step explanation:
In the movie Gattaca, Vincent's identity is called into question when he tries to pass himself off as Jerome Morrow, a genetically superior individual. Jerome is paralyzed and sells his identity to Vincent, who uses it to pose as a valid candidate for a position at Gattaca, a company that only hires genetically enhanced individuals. However, when a director is murdered at Gattaca and Vincent's genetic material is found at the scene, he becomes a prime suspect and is in jeopardy of being exposed.