once the least mutated genomes in an asexualpopulation begin to carry at least one (additional) bad mutation, no genomes with fewer mutations can be expected to be found in future generations (except as a result of highly unlikely back mutation). Full article >>>
Back mutations. These mask the changes that preceded them and make branches look shorter than they should be. Gene transfer between species. Full article >>>
In order to answer this question they assumed first, that there were a large enough number of alleles so that any mutation would lead to a different allele (that is the probability of back mutation to the original allele would be low enough to be ... Full article >>>
(Date:12/1/2008)... of the Journal of the American Dietetic Associat...ryday eating habits of consumers. Researchers look...hoice and methods for adding healthier foods to a ...ber 2008 Journal of the American Dietetic Associa...: Reported Reasons among Frequent Consumers, Menu...
(Date:12/1/2008)...d streams play a crucial role in the global carbon...eshwater ecologist Dr. Tom Battin, of the Universi... conference in October that our understanding of h... changed radically. , Microorganisms such as bac...s decompose organic matter as it flows downstream....
(Date:12/1/2008)...ommon chest wall deformity known as pectus excavat...y to exercise, according to a study published Dece...onducted at 11 North American hospitals, involved ...ween the ages of 8 and 21 who had pectus excavatum.... , The results were dramatic. Patients reported...
(Date:11/30/2008)...ross Europe are embarking on new research to devel... affects around 10 million EU citizens and there i...f Food Research, a lead partner in the Food Allerg...eople with food allergy can do is avoid the foods ...naphylaxis has a great impact on their quality of ...
..., but is there real neurophysiology behind it and ...nted in an American Physiological Society session ...Linda University, reports that not only is there r...icipation of the "mirthful laughter" involved in w...rprising and significant neuroendocrine/hormone ef...
...ry pathways in human glomerular diseases have been...Poliklinik, Munich, the University of Bristol“s Ch...nter, sanofi-aventis, and Genomatix Software GmbH....e National Academy of Sciences of the United State...nformatics approaches allow rapid characterization...
... and Virginia Tech in the United States have deter...le for the production xanthurenic acid (XA) in Ano...A plays a key role in the sexual reproduction of t...gambiae mosquitoes. Interfering with the formation... and insecticides to block malaria transmission. M...
...ng for the avid angler, one caught in the Bahamian...proved even more satisfying for the researchers wh...Unlimited (BTU) and the University of Miami Rosens... fish was a record catch, representing the longest...double the previous distance record. , Since 1998,...