Animals consist of many distinct cell types, all of which originate during development from a single cell: the fertilized egg. To generate this vast cellular diversity, the egg and its descendants must divide unevenly to ...
Cell & Microbiology
May 18, 2012
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(Phys.org) -- Researchers at Yale have identified an ancient slithering creature from the time of T. rex as the most primitive known snake, a finding with implications for the debate over snake origins.
Plants & Animals
Jul 25, 2012
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Jeanne Romero-Severson, associate professor of biological sciences at the University of Notre Dame, and her collaborators, are tracking the evolution of the live oaks of eastern North America, seeking to understand how the ...
Environment
Jul 24, 2012
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(Phys.org) —An archaeological dig led by Dr Marc Oxenham from The Australian National University's School of Archaeology and Anthropology has uncovered possibly the earliest cemetery site in Southeast Asia.
Archaeology
May 1, 2013
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Alpine marmots (Marmota marmota) live in extended family groups of up to 20 individuals. The groups consist of a dominant territorial pair and a number of subordinate individuals, typically descendants of the dominant pair. ...
Plants & Animals
Dec 6, 2011
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(Phys.org)—In 2003, a mysterious and surprising dinosaur was discovered that possessed not only wings on its arms but also long feathers on each leg forming a "hind wing." This was a completely new and unexpected body plan ...
Archaeology
Oct 23, 2012
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New research suggests that dual-identity immigrants—first-generation immigrants and their descendants who identify with both their cultural minority group and the society they now live in—may be more prone to political ...
Social Sciences
Jan 30, 2013
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