Evolution adds and subtracts, and nowhere is this math more evident than in vertebrates, which are programmed to have five digits on each limb. But many species do not. Snakes, of course, have no digits, and birds have three.
Evolution
Sep 4, 2011
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Brown fat is a hot topic, pardon the pun. Brown fats cells, as opposed to white fat cells, make heat for the body, and are thought to have evolved to help mammals cope with the cold. But, their role in generating warmth might ...
Cell & Microbiology
Mar 14, 2013
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(PhysOrg.com) -- Brookhaven scientists have created a new enzyme with the potential to interfere with a key cell-wall component in plants, possibly leading to plants that are easier to "digest" and convert to biofuels.
Biochemistry
Dec 21, 2009
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Scientists at Wake Forest Baptist Medical Center have taken the first steps to create neural-like stem cells from muscle tissue in animals. Details of the work are published in two complementary studies published in the September ...
Cell & Microbiology
Oct 12, 2012
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While some of our body's cells divide in a matter of hours, the process of making sperm, meiosis, alone takes about 14 days from start to finish. And fully six of those days are spent in the stage known as the pachytene, ...
Molecular & Computational biology
Mar 25, 2020
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(PhysOrg.com) -- A new chemical technique for depositing a non-crystalline form of silicon into the long, ultra-thin pores of optical fibers has been developed by an international team of scientists in the United States and ...
Optics & Photonics
Dec 13, 2011
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Biologists at UC San Diego have identified the specific region in vertebrates where adult blood stem cells arise during embryonic development.
Cell & Microbiology
Feb 14, 2010
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Biologists at the University of Leicester have published results of a new study into plant sex - and discovered that a particular gene switches on 'the essence of male'.
Cell & Microbiology
Mar 20, 2009
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Researchers from Freiburg discovered a novel mechanism that ensures obstacle-free protein traffic into the powerhouse of the cell
Cell & Microbiology
May 23, 2019
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(PhysOrg.com) -- A group of 13 of the top stem-cell research scientists submitted a letter to the journal Nature this week in response to the European Court of Justice (ECJ) case that could ban all patents involving stem-cell ...
