Abstract
Transposable elements (TEs) are mobile genetic elements that are present in prokaryotes and eukaryotes. The ubiquity and abundance of these self-replicating entities, bereft of cellular function, had earned them the label of ‘genomic parasites’. However, the status of TEs has been revised, with ample genomic and biological evidence now portraying them as “genomic gold”. They are perceived as a major participant in the evolution of species. This review addresses the classification of TEs as well as their role and significance in the evolution of genomes, genetic diversity, gene regulation, and exaptation of contemporary species of the plant and animal kingdoms.
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