The development of high throughput nucleic acid sequencing tools has rapidly increased the pace of virus discovery in the past 20 years. Yet in that time, while the largest DNA genomes have increased by nearly ten times, the largest known RNA viral genome has only increase in size by a tenth. This situation has now changed with the discovery of new RNA viruses of planarians and mollusks.
[Read more…] about Planaria and mollusks yield the biggest RNA virus genomes