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tag hygiene hypothesis ecology evolution cell molecular biology

The structure of a biological cell (macro)
The Long and Winding Road to Eukaryotic Cells
Amanda Heidt | Oct 17, 2022 | 10+ min read
Despite recent advances in the study of eukaryogenesis, much remains unresolved about the origin and evolution of the most complex domain of life.
Plague Genome: The Evolution Of a Pathogen
Ricki Lewis | Oct 28, 2001 | 7 min read
Plague has earned a place in history books as the Black Death of medieval Europe, and in novels, from Albert Camus' classic The Plague, to the more recent Year of Wonders.1,2 A different medium for telling the tale of the plague bacterium Yersinia pestis is its genome, recently sequenced by researchers at the Sanger Centre, the London School of Hygiene and Tropical Medicine, the Royal London School of Medicine and Dentistry, and the Imperial College of Science, Technology and Medicine.3 In addi
a microscope image of a rotifer
Bacterial Enzyme Keeps Rotifers’ Transposable Elements in Check
Christie Wilcox, PhD | Mar 3, 2022 | 5 min read
Jumping genes in bdelloid rotifers are tamped down by DNA methylation performed by an enzyme pilfered from bacteria roughly 60 million years ago, a study finds.
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 pair of zebra finches in a cage
Animal Divorce: When and Why Pairs Break Up
Catherine Offord | Jun 1, 2022 | 10+ min read
Many species of birds and other vertebrates form pair bonds and mate with just one other individual for much of their lives. But the unions don’t always work out. Scientists want to know the underlying factors.
Outsmarting Influenza's Rapid Evolution
Philip Hunter | Jun 29, 2003 | 7 min read
Twice yearly, World Health Organization health officials meet to strategize against influenza, a malady that kills at least 250,000 people each year. In a chess match of sorts, they work to predict their opponent's next move, in this case by modifying vaccines to compensate for changes in the critical viral antigen hemagglutinin, which triggers the host's long-term immune memory. It takes several months to manufacture and distribute flu vaccines in sufficient quantities to inoculate vulnerabl
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.
To Effectively Discuss Evolution, First Define 'Theory'
Ricki Lewis | May 11, 1997 | 9 min read
Evolution is the backbone of modern biology, but life scientists sometimes face audiences who perceive it as a threat to their religious beliefs. With laws such as North Carolina House Bill 511, proposed in March as an attempt to "ensure that evolution is not taught as fact in North Carolina public schools," scientists are being asked to clarify the distinction between science and religion. Professors at small Southern and Midwestern colleges seem to have the most experience in discussing-and s
Investigating Molecular Motors Step by Step
Jeffrey Perkel | Mar 14, 2004 | 10+ min read
Thom Graves MediaThe audience, several hundred biophysicists strong, was not expecting a James Brown impersonation. But there he was: Physiologist Yale Goldman, keynote speaker on motility at the Biophysical Society's annual meeting, doing his "asymmetric hand-over-hand motility dance with a limp" to tinny strains of "Papa's Got a Brand New Bag." And while Goldman, who eschewed Brown's trademark, over-the-top couture for understated, Ivy League-issue khakis and blue blazer, won't star on MTV any
A C-fern (Ceratopteris richardii) growing in a pot
Genome Spotlight: C-fern (Ceratopteris richardii)
Christie Wilcox, PhD | Sep 22, 2022 | 5 min read
Sequences for the model organism and two of its kin reveal how these plants got their oversized genomes.

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