Functional genomics

Definition

The genome-wide study of gene functions, interactions, and dynamic expression patterns—encompassing transcription, translation, regulation, and protein–protein interactions—using high-throughput methods rather than single-gene approaches. Functional genomics contrasts with structural genomics by emphasizing how genetic information is used rather than how it is organized.

Etymology

Example

Functional genomics of the mosquito Aedes aegypti identified cytochrome P450 genes upregulated after permethrin exposure, revealing specific detoxification enzymes responsible for insecticide resistance.

Related Terms

• transcriptomics
• Proteomics
• Genomics
• Gene expression
• RNA sequencing
• metabolomics
• phenomics
• systems biology

Usage Notes

Often contrasted with structural genomics (DNA sequence and organization). In arthropod research, functional genomics is essential for understanding vector competence, host–pathogen interactions, and adaptation to environmental stressors. The term implies large-scale, hypothesis-generating approaches rather than targeted candidate-gene studies.