Inside every cell lies a genome – a full set of DNA that contains the instructions for building an organism. Across the biological world, genomes show a staggering diversity in size but scientists still don’t fully understand why. Now, scientists have found a link between mutation rate – how quickly the DNA sequence changes – and genome size. Writing in Current Biology, the researchers reported that prokaryotes with higher mutation rates lose genes at a faster pace, and therefore have smaller genomes.
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Source: ScienceDaily