Ecogenetics

Ecogenetics is a branch of genetics that studies genetic traits related to the response to environmental substances.
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The interaction of genetics with the environment. The genetic disease PKU (phenylketonuria) provides an illustration of ecogenetics. Persons with PKU lack an enzyme to process an amino acid (phenylalanine) and so require a special environment: a diet low in phenylalanine.

The branch of genetics that studies how (inherited or acquired) genetic factors influence human susceptibility to environmental health risks. It studies the genetic basis of environmental toxicity to develop methods for the detection, prevention and control of environmentally-related disease. Ecogenetics interacts with ecology, molecular genetics, toxicology, public health medicine and environmental epidemiology.