Genetic drift, not natural selection, identified as main factor driving speciation in endangered pupfish species
Scientists have identified a new member on the genetic family tree of an endangered pupfish native to south-central New Mexico.
Scientists have identified a new member on the genetic family tree of an endangered pupfish native to south-central New Mexico.
Plants & Animals
May 20, 2024
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134
A thousand kilometers south of Tokyo, far into the largest ocean on Earth, lies a chain of small, volcanic islands—the Ogasawara Islands. Nature has been able to develop on its own terms here, far from both humans and the ...
Ecology
Feb 20, 2024
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8
With spring settling in across the U.S. and days lengthening, many people are ready to spend more time outside. But after a walk outdoors, have you ever found seeds clinging to your clothes? Lodged in your socks and shoelaces? ...
Ecology
Mar 20, 2023
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11
The Dentinger Lab at the Natural History Museum of Utah has published a provocative new paper in the journal New Phytologist that describes their work with the much beloved mushroom, Boletus edulis, better known by gastronomers ...
Evolution
Nov 16, 2022
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528
A new study, led by British Antarctic Survey and the University of Bristol, provides the first evidence that a controversial evolutionary process may be responsible for lanternfishes becoming one of the most diverse families ...
Evolution
Sep 29, 2022
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3
Human populations have waxed and waned over the millennia, with some cultures exploding and migrating to new areas or new continents, others dropping to such low numbers that their genetic diversity plummeted. In some small ...
Evolution
Jun 23, 2022
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523
One suggested way to save humankind in the event of a deadly pandemic or other extreme global catastrophe is establishing a safe refuge—on an island or in such far-out places as the moon or under water—where a portion ...
Other
Jun 2, 2022
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6
Tyrannosaurus rex, the fearsome predator that once roamed what is now western North America, appears to have had an East Coast cousin.
Evolution
Aug 25, 2021
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790
The mammal tree of life is a real leaner. Some branches are weighed down with thousands of species—we're looking at you, rodents and bats—while others hold just a few species.
Plants & Animals
Dec 4, 2019
1
31
When they share habitat, orangethroat and rainbow darters tend to avoid one another, even though they are closely related and can produce "hybrid" offspring. The males compete with males of their own species and will almost ...
Evolution
Nov 25, 2019
0
239