Genetic diversity arises through the interplay of mutation, selection and genetic drift. In most scientific models, mutants have a fitness value which remains constant throughout. Based on this value, they compete with other ...
Evolution
Jun 28, 2012
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Barley grown in Scandinavian countries is adapted in a similar way to reindeer to cope with the extremes of day length at high latitudes. Researchers have found a genetic mutation in some Scandinavian barley varieties that ...
Plants & Animals
May 11, 2012
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Flowering is the most crucial act that plants undergo, as the fruits of such labor include crops on which the world depends, and seeds from which the next generation grows.
Plants & Animals
Apr 17, 2012
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Reproductive and somatic aging use different molecular mechanisms that show little overlap between the types of genes required to keep oocytes healthy and the genes that generally extend life span, according to Coleen Murphy, ...
Cell & Microbiology
Dec 6, 2011
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Genetically modified animals are designed to contain the spread of pathogens. One prerequisite for the release of such organisms into the environment is that the new gene variant does not spread uncontrollably, suppressing ...
Biotechnology
Nov 21, 2011
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Australian scientists have identified the behaviour of the mutant protein 'huntingtin' which leads to the fatal Huntington's disease providing potential targets to treat the disease, a University of Melbourne study reveals.
Biochemistry
Jul 28, 2010
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(PhysOrg.com) -- Another step toward improving understanding of electron exchange between microbes and minerals has been documented in the January 2010 issue of Geobiology. Bacteria such as the metal-reducing Shewanella oneidensis ...
Cell & Microbiology
Apr 19, 2010
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(PhysOrg.com) -- Does it matter if nature solves the same problem multiple ways? A NSF-supported study of lizard populations in White Sands, New Mexico has helped researcher Erica Rosenblum of the University of Idaho begin ...
Plants & Animals
Dec 30, 2009
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You may never hear fruit flies snore, but rest assured that when you're asleep they are too. According to research published in the January 2009 issue of the journal Genetics, scientists from the University of Missouri-Kansas ...
Jan 13, 2009
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As a chemical for industrial processes, butanol is used in everything from brake fluid, to paint thinners, to plastics. According to a University of Illinois researcher, butanol made from plant material could displace butanol ...
Jan 8, 2009
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