Three-quarters of the DNA in evolved organisms is wrapped around proteins, forming the basic unit of DNA packaging called nucleosomes, like a thread around a spool. The problem lies in understanding how DNA can then be read ...
Biotechnology
Mar 19, 2013
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For deer mice living in the Nebraska Sandhills, color can literally be the difference between life and death.
Evolution
Mar 14, 2013
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Cryptic comments seem to have an ambiguous, obscure or hidden meaning. In biology, cryptic species are outwardly indistinguishable groups whose differences are hidden inside their genes.
Ecology
Mar 12, 2013
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(Phys.org) —Scientists have delved deeper into the evolutionary history of the fruit fly than ever before to reveal the genetic activity that led to the development of wings – a key to the insect's ability to survive.
Plants & Animals
Mar 11, 2013
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New research shows that a tiny piece of RNA has an essential role in ensuring that embryonic tissue segments form properly.
Cell & Microbiology
Mar 11, 2013
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Four billion years ago, soon after the planet cooled enough for life to begin, primordial cells may have replicated and divided without protein machinery or cell walls, relying instead on just a flimsy lipid membrane. New ...
Cell & Microbiology
Feb 28, 2013
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(Phys.org)—Part of the ancient mystery of the makeup of the modern Western dog has been solved by a team led by researchers at the University of California, Davis, School of Veterinary Medicine.
Plants & Animals
Feb 25, 2013
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Vibrio cholerae, the scourge of nations lacking clean water. Pseudomonas aeruginosa, the microbe that plagues people with cystic fibrosis. Acinetobacter species, opportunistic organisms that can infect vulnerable people. ...
Cell & Microbiology
Feb 15, 2013
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The genes activated for human speech are similar to the ones used by singing songbirds, new experiments suggest.
Plants & Animals
Feb 14, 2013
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A single embryonic stem cell can develop into more than 200 specialized cell types that make up our body. This maturation process is called differentiation and is tightly regulated. If the regulation is lost, specialized ...
Cell & Microbiology
Feb 7, 2013
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