Genomics

Definition

The large-scale study of entire genomes, encompassing their structure, function, evolution, mapping, and editing. In arthropod biology, genomics enables comparative analysis across species, identification of genes underlying insecticide resistance in pests such as the diamondback moth (Plutella xylostella), and tracing of vector competence in mosquitoes (Anopheles, Aedes) and ticks (Ixodes). The field relies on high-throughput DNA sequencing and bioinformatics to characterize gene networks, regulatory regions, and structural variation rather than focusing on individual genes in isolation.

Etymology

From Greek genos (race, offspring, kind) + -omics (denoting fields of study dealing with comprehensive sets of biological molecules), modeled after earlier terms such as genetics.

Example

Population genomics of the malaria vector Anopheles gambiae revealed selective sweeps near voltage-gated sodium channel genes associated with pyrethroid resistance, informing targeted insecticide rotation strategies.

Related Terms

• genetics
• transcriptomics
• Proteomics
• Bioinformatics
• population genomics
• Functional genomics
• comparative genomics
• Genome
• gene
• sequencing

Usage Notes

Distinguish from genetics, which traditionally examines individual genes and inheritance patterns; genomics emphasizes collective, genome-wide analysis. In entomology, functional genomics links gene expression to phenotypic traits such as diapause, pheromone production, or host-plant specialization. Comparative genomics across arthropod lineages illuminates evolutionary innovations such as silk production in spiders or social organization in Hymenoptera. The term is typically treated as a mass noun with no plural form.