Scientists from the Monell Center report that seven of 12 related mammalian species have lost the sense of sweet taste. As each of the sweet-blind species eats only meat, the findings demonstrate that a liking for sweets ...
Plants & Animals
Mar 12, 2012
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For snakes, spiders, and other venomous creatures, the "business end," or active part, of a toxin is the area on the surface of a protein that is most likely to undergo rapid evolution in response to environmental constraints, ...
Cell & Microbiology
Feb 23, 2012
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The problem in biology of how to identify the promoters of olfactory receptor genes (>1000 genes) has remained unsolved due to the difficulty of purifying sufficient material from the olfactory epithelium. Researchers at ...
Biotechnology
Jan 5, 2012
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Scientists studying longevity thought it might be good to lack a copy of a gene, called IGF1 receptor, that is important in insulin signaling. Previous studies showed invertebrates that lacked the copy lived longer, even ...
Biochemistry
Nov 23, 2011
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Growing up just got more complicated. Thomas Jefferson University biochemistry researchers have shown for the first time that the receptor for a major insect molting hormone doesn't activate and repress genes as once thought. ...
Biochemistry
Oct 6, 2011
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(PhysOrg.com) -- A "four-eyed" fish that sees simultaneously above and below the water line has offered up a dramatic example of how gene expression allows organisms to adapt to their environment.
Plants & Animals
Jul 20, 2011
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In analyzing the molecular sensor for the plant growth hormone brassinolide, researchers at the Salk Institute for Biological Studies discovered that although plants took an evolutionary path different from their animal cousins, ...
Cell & Microbiology
Jan 31, 2011
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Researchers at the University of Illinois at Chicago College of Medicine have found how gene expression that may contribute to drug resistance is ramped up in unusual types of breast tumors. Their findings may offer new therapy ...
Biochemistry
Oct 8, 2010
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By following the "nose" of fruit flies, Yale scientists are on the trail of new insect repellents that may reduce the spread of infectious disease and damage to agricultural crops. That's because they've learned for the first ...
Biochemistry
Sep 22, 2010
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Darwin's finches - some 14 related species of songbirds found on the Galapagos and Cocos Islands - will forever be enshrined in history for having planted the seeds of the theory of evolution through natural selection. Today, ...
Plants & Animals
Apr 6, 2010
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