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… thousands to millions of copies of a particular DNA sequence from just a few pieces of DNA. Summary The extreme … added. The Marsarchaeota furnish greater definition of the roots of the tree of life on Earth, and their broad …

… Cas9 needs guide RNA to lead it to the correct sequence to snip — but not all guides are effective. To … approach: CRISPR-Cas9 relies on RNA with a short guiding sequence (20 bp) that directs the endonuclease where to cut, … , the scientists thus set out to identify which sgRNA sequences were reliable. In an elegant, quantitative screen, …

… organisms called phytoplankton (from the Greek phyto for ‘plant’ and planktos for ‘wanderer’). But they vary across … than previously suspected. “That would cause significant consequences on the entire food web, and therefore ecosystem … look for patterns in algal communities, including the algae-associated microbiomes that influence algal diversity and …