What does the phrase “It’s not in your DNA” symbolize in the film?

The phrase “It’s not in your DNA” symbolizes the notion that potential cannot be solely determined by genetics. In the context of the film, this statement underscores the idea that an individual’s abilities, aspirations, and future are influenced by their choices, environment, and determination, rather than being strictly preordained by their genetic makeup.

Characters in "GATTACA" fight against the societal belief that one's genetic identity determines their place in life. The protagonist, Vincent, exemplifies this theme through his journey to defy the limitations imposed on him by his genetic heritage, showing that personal will and effort play a significant role in achieving one's goals. Thus, this phrase encapsulates a central message of the film: that human potential is broader than genetic inheritance and can be shaped by individual actions and resilience.