DNA passed to and from all kinds of organisms, even across kingdoms, has helped shape the tree of life, to a large and undisputed degree in microbes and also unexpectedly in multicellular fungi, plants, and animals.
This year revealed just how much scientists have learned about the disease, from how animals become naturally cancer-resistant to how tumor cells harness extracellular DNA to develop rapid drug resistance.
A new study suggests that DNA synthesized in the cell cytoplasm drives retinal cell death in an advanced form of age-related macular degeneration, a leading cause of blindness.