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Synthetic microorganisms allow scientists to study ancient evolutionary mysteries | Science Daily
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Synthetic microorganisms allow scientists to study ancient evolutionary mysteries | Science Daily

By studying one of these engineered organisms-a bacterium whose genome consists of both ribonucleic acid (RNA) and deoxyribonucleic acid (DNA)-the scientists hope to shed light on the early evolution of genetic material, including the theorized transition from a world where most life relied solely on the genetic molecule RNA to one where DNA serves as the primary storehouse of genetic information.

Using a second engineered organism, a genetically modified yeast containing an endosymbiotic bacterium, they hope to better understand the origins of cellular power plants called mitochondria. Mitochondria provide essential energy for the cells of eukaryotes, a broad group of organisms-including humans-that possesses complex, nucleus-containing cells.

The researchers report engineering the microbes in two papers, one published October 29, 2018 in the Proceedings of the National Academy of Sciences (PNAS) and another published August 30, 2018 in Journal of the American Chemical Society (JACS).

Source: Science Newsfrom research organizations Synthetic microorganisms allow scientists to study ancient evolutionary mysteries | Science Daily