Drake's Rule as a Consequence of Approaching Channel Capacity

How mutations accumulate in genomes is the central question of molecular evolution theories, however our understanding of this process is far from complete. Drake's rule is a notoriously universal property of genomes from microbes to mammals - the number of (functional) mutations per-genome per-generation is approximately constant within a phylum, despite orders of magnitude differences in genome sizes and diverse populations properties. So far there is no concise explanation for this phenomenon. A formal model of storage of genetic information suggests that a genome of any species operates near its maximum informational storage capacity, and the mutation rate is near its upper limit, providing a simple explanation for the rule with minimal assumptions.