This could further help in understanding genome and transcriptome dynamics during evolution [ 38 ], suggesting that natural selection must not simply act through constantly evaluating the fitness of existing DNA within the genome on a gene-by-gene basis, but also by strongly favoring advantageous polymorphic gene-regulatory mechanisms which arise as a result of rare, but highly significant, genomic mutations that alter the expression patterns of large clusters of genes.
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Contribution of transcriptional regulation to natural variations in Arabidopsis.
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