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bacteria and DNA molecules on a purple background.
Engineering the Microbiome: CRISPR Leads the Way
Mariella Bodemeier Loayza Careaga, PhD | Mar 15, 2024 | 10+ min read
Scientists have genetically modified isolated microbes for decades. Now, using CRISPR, they intend to target entire microbiomes.
A fruit bat in the hands of a researcher
How an Early Warning Radar Could Prevent Future Pandemics
Amos Zeeberg, Undark | Feb 27, 2023 | 8 min read
Metagenomic sequencing can help detect unknown pathogens, but its widespread use faces challenges.
The Genetics of Society
Claire Asher and Seirian Sumner | Jan 1, 2015 | 10 min read
Researchers aim to unravel the molecular mechanisms by which a single genotype gives rise to diverse castes in eusocial organisms.
Whole-Genome SNP Genotyping
Marilee Ogren | Jun 1, 2003 | 8 min read
Clockwise from top left: images courtesy of Affymetrix, Illumina, Sequenom and Illumina Take any two individuals, sequence and compare their genomic DNA, and you'll find that the vast majority (about 99.9%) of the sequences are identical. In the remaining 0.1% lie differences in disease susceptibility, environmental response, and drug metabolism. Researchers are understandably keen to dissect these variations, most of which take the form of single-nucleotide polymorphisms (SNPs). A SNP (pron
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.
PCR Primed To Spur Chain Of Applications
Holly Ahern | Jun 25, 1995 | 10+ min read
What would you do if your research interests revolved around obtaining DNA from a bacterium preserved for millions of years in the gut of a bee stuck in amber, matching up a murderer to crime- scene blood half a century old, or cloning genes from a 1,000- year-old mummy? Most scientists would first consider PCR--the polymerase chain reaction--as a technique for approaching problems such as these. With PCR, minute quantities of nucleic acids can be amplified millions of times into sufficient qua
The Infection Connection in Schizophrenia
Brendan Maher | Nov 2, 2003 | 7 min read
Adapted from image by I.I. Gottesman ©2001  GENES AND MORE: The risks of developing schizophrenia over a lifetime to the relatives of schizophrenia sufferers accord with a largely genetic explanation. Yet with 48% concordance for identical twins, environmental factors may play a role. It's a scary thought that one could develop a debilitating mental illness such as schizophrenia as easily as catching a cold. Well, it's more complicated than that, say advocates of the so-called infec
Science Museums Exhibit Renewed Vigor
Christine Bahls | Mar 28, 2004 | 10+ min read
Erica P. JohnsonApreschool girl with black braids presses a finger to a disk that twists a brightly lit DNA model, transforming its ladder shape into a double helix. Her head bops from side to side in wonder as the towering DNA coils and straightens. When a bigger boy claims her place, the girl joins meandering moms and dads with their charges as they twist knobs, open flaps, and simply stare at flashing helixes and orange information boards: all a part of the museum exhibit called "Genome: The
Jumping Genes A Buyers' Guide
Hillary Sussman | Jun 15, 2003 | 6 min read
Courtesy of Ivan Rayment  CAUGHT IN MID HOP: Structure of the Tn5 transposase/DNA complex No one believed Barbara McClintock in 1951 when she first described DNA that "jumped" from site to site within maize chromosomes, altering the expression of genes near the sites of integration. In due course, these transposable elements, or transposons, were found to be ubiquitous in nature, and 30 years later McClintock won the Nobel Prize. Today transposons have gone from molecular oddity to molec
Games for Science
The Scientist | Jan 1, 2013 | 10+ min read
Scientists are using video games to tap the collective intelligence of people around the world, while doctors and educators are turning to games to treat and teach.

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