What shape does the staircase in the GATTACA facility represent?

The staircase in the GATTACA facility represents a double helix shape, which is a direct reference to the structural formation of DNA. The double helix is a fundamental concept in genetics and biotechnology, as it illustrates how genetic information is encoded and stored. By incorporating this design element into the architecture of the facility, the filmmakers create a visual metaphor for the theme of genetic engineering and the centrality of DNA in the society depicted in the movie. The double helix symbolizes the intertwining of genetics with personal identity and societal roles, which is a critical aspect of the narrative in GATTACA.