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tag library evolution microbiology ecology

An illustration of green bacteria floating above neutral-colored intestinal villi
The Inside Guide: The Gut Microbiome’s Role in Host Evolution
Catherine Offord | Jul 1, 2021 | 10+ min read
Bacteria that live in the digestive tracts of animals may influence the adaptive trajectories of their hosts.
a black abalone on a rock
Genome Spotlight: Black Abalone (Haliotis cracherodii)
Christie Wilcox, PhD | Jun 23, 2022 | 3 min read
The researchers who constructed the first reference genome for this critically endangered mollusk say it will assist restoration efforts.
Bacteria and Humans Have Been Swapping DNA for Millennia
Kelly Robinson and Julie Dunning Hotopp | Oct 1, 2016 | 8 min read
Bacteria inhabit most tissues in the human body, and genes from some of these microbes have made their way to the human genome. Could this genetic transfer contribute to diseases such as cancer?
Wrestling with Recurrent Infections
Gayatri Vedantam and Glenn S. Tillotson | May 1, 2011 | 9 min read
By Gayatri Vedantam and Glenn S. Tillotson Wrestling with Recurrent Infections Clostridium difficile is evolving more robust toxicity, repeatedly attacking its victims, and driving the search for alternative therapies to fight the infection. photoillustration by Sean Mccabe; Science Photo Library (boy); Sebastian Kaulitzki/ Istockphoto.com (Intestines); Olena Timashova/Istockphoto.com (Green bacteria); Jiri Flogel/Istockphoto.com (Blue bacteria) As infectiou
Seeing sharks from space
Stephen Pincock | Nov 6, 2005 | 3 min read
There's always been an air of mystery around whale sharks.
Bioscience Make-Over
Karen Young Kreeger | Oct 15, 1995 | 3 min read
Echoing the centuries-old debate among scientists over how to organize and name Earth's species, authors of National Research Council (NRC) reports rating research-doctorate programs have also struggled over the "taxonomy" of disciplines within the biosciences. Allan Cartter, in his 1966 report An Assessment of Quality In Graduate Education (Washington, D.C., American Council on Education), observed that grouping programs within the biological sciences represented a challenge, owing to the vari
Surpassing the Law of Averages
Jeffrey M. Perkel | Sep 1, 2009 | 7 min read
By Jeffrey M. Perkel Surpassing the Law of Averages How to expose the behaviors of genes, RNA, proteins, and metabolites in single cells. By necessity or convenience, almost everything we know about biochemistry and molecular biology derives from bulk behavior: From gene regulation to Michaelis-Menten kinetics, we understand biology in terms of what the “average” cell in a population does. But, as Jonathan Weissman of the University of Califo
"Big Cross" Lands Sticklebacks in the Spotlight
David Secko | Nov 7, 2004 | 5 min read
Marine threespine sticklebacks haven't morphologically changed in an estimated 10 million years, but their freshwater offshoots show no signs of slowing down. These 5-cm-long, freshwater fish have undergone a recent evolutionary change, variably losing their calcified body armor and retractable pelvic and dorsal spines. Remarkably, isolated marine and freshwater sticklebacks can be hybridized in the laboratory, a fact that is allowing researchers to analyze the genetics behind their natural dive
First DOE Microbe Sequencing Project Grants Widely Hailed As Potential `Treasure Trove'
Karen Young Kreeger | Feb 5, 1995 | 6 min read
A recently established Department of Energy (DOE) initiative is expected to yield major scientific and commercial contributions as it embarks on its multimillion-dollar effort to sequence the entire genome of several free-living microorganisms. Scientists anticipate that the program will substantially expand understanding of evolutionary relationships, while it also advances genome-sequencing technology. Commercial application of the sequences, such as industrial enzymes used in cleaning up th
Automated Colony Pickers Evolve
Helen Dell(hdell@the-scientist.com) | Jul 3, 2005 | 6 min read
Everyone knows that the first genome sequencing projects took years of work and represent the combined product of tens of thousands of individual fragments.

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