"Gene ontology" refers to a system used to categorize and understand the functions of genes. It helps scientists organize and describe the different roles genes play in various biological processes. Full definition
Annotations in CharProtDB include gene name, symbol and various controlled vocabulary terms, including Gene Ontology terms, Enzyme Commission number and TransportDB accession. (jcvi.org)
Heat maps showing different gene expression patterns (color scale represents the fold change) using gene ontology (GO) analyses to compare the transcriptomes of the rope versus gill (A; P < 0.05, false discovery rate ≤ 0.1) or muscle tissues (B; P < 0.05, false discovery rate ≤ 0.1) in mature male sea lamprey. (jeb.biologists.org)
The principal component analysis revealed that aging explains ~ 16 % of protein expression variability and is associated with Gene Ontology terms transmembrane, integral / intrinsic membrane, endoplasmic reticulum and mitochondrion. (phenogenomics.cz)