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tag parasite ecology developmental biology evolution

Close up photo of a wing
Unearthing the Evolutionary Origins of Insect Wings
Jef Akst | Apr 4, 2022 | 6 min read
A handful of new studies moves the needle toward a consensus on the long-disputed question of whether insect wings evolved from legs or from the body wall, but the devil is in the details.
Genetic Parasites and a Whole Lot More
Barry Palevitz | Oct 15, 2000 | 10+ min read
Photo: Ori Fragman, Hebrew University Hordeum spontaneum, the plant studied for BARE-1 retroelements. With genome sequences arriving almost as regularly as the morning paper, the public's attention is focused on genes--new genes to protect crops against pests; rogue genes that make bacteria resistant to antibiotics; faulty genes that, if fixed, could cure diseases such as muscular dystrophy. What many people don't realize is that genes account for only part of an organism's DNA, and in many c
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.
Seirian Sumner: Wasp Whisperer
Cristina Luiggi | Aug 1, 2011 | 3 min read
Research Fellow, Institute of Zoology, London. Age: 37
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.
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
The Reduction of Seduction
Nick Atkinson | Sep 1, 2006 | 10+ min read
FEATURE The Reduction of Seduction © PHOTO ALTO From symmetry to smell to the dance floor groove, how evolution carves our ideas of sexy BY NICK ATKINSON Dorothy Hopcroft got it right. Agreeing to a date at the urging of a meddling friend, she didn't quite know what to make of Frederick Turton. He arrived on a bicycle (her former beau had a car) made at the factory where he worked a tough week with little prospect of promotion, an
Opinion: Beyond the Model
Beth Rowan and Daniel Koenig | Nov 29, 2011 | 4 min read
How next-generation sequencing technologies will drive a new era of research on non-model organisms.
Six Scientists Are Added To Ranks Of Prestigious MacArthur Fellows
Karen Young Kreeger | Sep 1, 1996 | 9 min read
SOLVING REAL-WORLD PROBLEMS: MacArthur fellow Vonnie McLoyd's research combines concepts in socioeconomics, psychology, and anthropology. This year's John D. and Catherine T. MacArthur Foundation fellowships will help six scientists advance their cutting-edge, multidisciplinary projects that extend from the ocean depths to distant stars and planets. With grants of about $250,000 or more, the newly named fellows will be able to finance innovative-even maverick-research ideas that might otherwis
"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

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