Abstract
Sequence duplication is nowadays recognized as an important mechanism that underlies the
evolution of eukaryote genomes, being indeed one of the most powerful strategies for the generation
of adaptive diversity by modulating transcriptional activity. The evolutionary novelties simultaneously
associated with sequence duplication and differential gene expression can be collectively referred to as
duplication-mediated transcriptional regulation. In the last years, evidence has emerged supporting the
idea that sequence duplication and functionalization represent important evolutionary strategies acting
at the genome level, and both coding and non-coding sequences have been found to be targets of such
events. Moreover, it has been proposed that deleterious effects of sequence duplication might be potentially
silenced by endogenous cell machinery (i.e., RNA interference, epigenetic repressive marks,
etc). Along these lines, our aim is to highlight the role of sequence duplication on transcriptional activity
and the importance of both in genome evolution.
Keywords:
Sequence duplication, genome evolution, transcriptional regulation, gene duplication, transposable elements, gene
expression.
Graphical Abstract
[19]
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BMC Biol., 2017,
15(1), 62.
[
http://dx.doi.org/10.1186/s12915-017-0399-x] [PMID:
28756775]
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