A policy of discrimination towards a individual or group due to the presence of markers within their genetic code.
The doctrine or system under which a individual(s) identifiable genetic markers makes them open for discrimination. Under Genomism, a person can be accessed and determined fit or unfit for a occupation, activity or even inclusion within the society itself, all without consideration of personal achievements, ability or demeanor.
This can extend to imprisoning a person in which no crime had (yet) been committed but which a person has a genetic makeup indicating a likelihood of crime.
To (il)legally discriminate due to a DNA analysis.
"I didn't get the job because they sampled my DNA and determined that I had a 37% likelihood of reduced proficiency..."
See film: GATTACA (1997)