(Phys.org) —Olfactory sensory neurons – nerve cells in the nose – directly sense molecules that convey scent, then send the signals to the brain. Biologists have long wondered how it's possible for each nerve cell to ...
Cell & Microbiology
Mar 5, 2013
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Have you ever marveled at the vast diversity of life on our planet, from tiny creatures living only a few hours to majestic beings that can survive for centuries? These differences in lifespan, size, and reproductive age ...
Plants & Animals
Mar 22, 2023
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A simple breeding experiment, combined with genetic analysis, can rapidly uncover genes that promote cooperation and higher yields of plant populations, according to a new study published November 29 in the open access journal ...
Molecular & Computational biology
Nov 29, 2022
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Imagine a pair of twins that everyone believed to be estranged, who turn out to be closer than anyone knew. A genetic version of this heartwarming tale might be taking place in our cells. We and other mammals have two copies ...
Cell & Microbiology
Mar 5, 2015
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57
Individuals of a particular species generally differ from one another. We are clearly most adept at recognizing members of our own species, although dog and cat owners will be ready to confirm that their pets look unique. ...
Biotechnology
Jun 11, 2013
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Magellanic penguins have a high level of variation in genes associated with the ability to fight infectious disease, but a recent study found that the mechanism the penguins use to ensure that diversity is far from black ...
Plants & Animals
Sep 5, 2012
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Whitehead Institute researchers have determined that the transcription factor Nanog, which plays a critical role in the self-renewal of embryonic stem cells, is expressed in a manner similar to other pluripotency markers. ...
Cell & Microbiology
Jul 3, 2013
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With the uplift of the Tibetan Plateau, large mountains and rivers were created in Eurasia that significantly altered its geomorphology and climate. Since they are largely restricted to river systems, fishes are more likely ...
Plants & Animals
Mar 23, 2023
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Researchers have taken a first look at the broad genetic changes that accompany reproductive declines in inbred populations. Although scientists have known for more than a century that small populations of closely related ...
Ecology
Mar 12, 2009
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Understanding the traits that have undergone positive selection during human evolution can provide insight into the events that have shaped our species, as well as into the diseases that continue to plague us today. As the ...
Evolution
Oct 12, 2023
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