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tag calorie restriction evolution ecology

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.
Humans Never Stopped Evolving
John Hawks | Aug 1, 2016 | 10 min read
The emergence of blood abnormalities, an adult ability to digest milk, and changes in our physical appearance point to the continued evolution of the human race.
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.
Biochemical, Reagents Kits Offer Scientists Good Return On Investment
Holly Ahern | Jul 23, 1995 | 8 min read
Investment Author:Holly Ahern If you were to ask several life scientists to name a particular biochemical product that they simply could not do without, you'd probably get a myriad of answers that would mirror the research interests of the group you questioned. A molecular evolutionist trying to differentiate two closely related species of monkeys by restriction fragment-length polymorphism (RFLP) analysis might cite restriction enzymes, which can cut DNA into pieces of varying length. A cell b
Researchers Receiving MacArthur Fellowships Demonstrate 'Capacity To Make A Difference'
Bruce Anderson | Sep 14, 1997 | 6 min read
PRIZE WITH A PRICE: Science historian Peter Galison has taken some ribbing from his family since being named a MacArthur fellow. One could almost pity Peter Galison. A historian of science at Harvard University, Galison is one of seven members of the scientific community among the 23 recipients of this year's John D. and Catherine T. MacArthur Foundation Fellowships. The coveted five-year awards provide unrestricted support plus health insurance to talented individuals, with no reports or proj
Odd Man Out
Alla Katsnelson | Mar 1, 2010 | 10+ min read
Do fish have personalities?
Articles Alert
Simon Silver | Jul 8, 1990 | 7 min read
The Scientist has asked a group of experts to comment periodically upon recent articles that they have found noteworthy. Their selections, presented herein every issue, are neither endorsements of content nor the result of systematic searching. Rather, the list represents personal choices of articles the columnists believe the scientific community as a whole may also find interesting. Reprints of any articles cited here may be ordered through The Genuine Article, 3501 Market St., Philadelphia,
Scientists Debate RNA's Role At Beginning Of Life On Earth
Ricki Lewis | Mar 30, 1997 | 9 min read
Sidebar: RNA's Role at Beginning of Life - For Further Information Before there was life, there were chemicals. The idea that ribonucleic acid (RNA), because of its catalytic capability and multiple roles in protein synthesis, was the chemical that led directly to life is termed the RNA world hypothesis. Although the phrase "RNA world" is generally attributed to Walter Gilbert, Harvard University's Carl M. Loeb University Professor, in a short 1986 paper, the idea of RNA's importance at the beg

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