Relating to or denoting the study of the expression of the set of genes in an organism.
- The factors that determine composition of coding and noncoding regions of DNA are not well understood, but in the postgenomic era, some compositional rules are beginning to unravel.
- In the postgenomic era, when new technologies are readily available to evolutionary geneticists, the field's attention is shifting to the evolution of expression at the RNA and protein levels.
- The examination of these and other measures to detect changes of gene function along branches of a phylogenetic tree will become increasingly important in the postgenomic era.
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