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) -- With more than 60,000 descendants in six generations, Pawnee Farm Arlinda Chief and his son Walkway Chief Mark cast a long genetic shadow. New research on the genomes of the two bulls show how portions of their ...
Biotechnology
Apr 25, 2012
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The two-and-a-half-year TARA OCEANS expedition finishes on 31 March when the ship and crew reach Lorient, France. The arrival completes a journey of 60 000 miles across all the world's major oceans to sample and investigate ...
Environment
Mar 27, 2012
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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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We know that our environment -- what we eat, the toxic compounds we are exposed to -- can positively or negatively impact our life span. But could it also affect the longevity of our descendants, who may live under very different ...
Biotechnology
Oct 19, 2011
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(PhysOrg.com) -- A new paper by researchers at the New England Complex Systems Institute reveals the limitations of evolutionary studies that ignore geography. They show that how individuals are arranged in space, and the ...
Evolution
Oct 19, 2011
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Penicillin and its descendants once ruled supreme over bacteria. Then the bugs got stronger, and hospitals have reported bacterial infections so virulent that even powerful antibiotics held in reserve for these cases don't ...
Analytical Chemistry
Sep 16, 2011
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