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Contagious cancer in dogs confirmed; origi
See article by Murgia et al. in the August 11, 2006, issue of the journal Cell for details. A new study in the August 11, 2006 issue of the journal Cell provides evidence that a form of cancer afflicting dogs has spread from one individual to another by the transmission of the tumor cells themselves. The disease demonstrates how a cancer cell can become a successful parasite with a worldwide distribution, according to the researchers.
Note: all of the sequences from the links immediately above are simple linear readouts of the amino acid sequences of the proteins indicated. However some sense of the protein's higher order structure emerges from the alternation between the higher-pitched polar amino acids and the lower-pitched nonpolar amino acids.
Genetic Music: Music from DNA and protein sequences
In evolutionary biology , group selection refers to the idea that alleles can become fixed or spread in a population because of the benefits they bestow on groups, regardless of the alleles' effect on the fitness of individuals within that group.
Group selection - Wikipedia, the free encyclopedia
Fish of two different species have been filmed helping each other to hunt. It is the first known instance of two unrelated species hunting cooperatively, except for humans. Like a hunter bringing a dog to flush out rabbits, groupers entice moray eels to hunt with them ( movie 1 ).
Eels and groupers hunt better together - life - 05 December 2006
Bacteria discovered 2 miles underground in
About two miles below the ground in a South African gold mine, co-author Duane Moser stands next to the fracture zone (white area) where the one-of-a-kind bacteria were found.
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American Scientist Online - Investigating
Talk about healing energy. Every wound, from the tiniest scratch to the nastiest gash, generates an electric field that pulls in cells that help repair the damage. Now researchers have identified the genes which allow cells to respond to electricity, a finding that could have important medical implications. Scientists have known for more than 150 years that wounds generate faint electric fields. Most researchers recognize that these fields play some role in wound healing, but just exactly how this worked or which genes were involved in this electric response--called electrotaxis--remained unclear.
Genes Give Cells an Electric Personality
Smelly squirrels fool hungry snakes - life
Squirrels are the unlikely inventors of a cloaking device that lets them thwart rattlesnakes by using the snakes' own scent against them.&8230;free your imagination&8230;
On 14 June 1918, the supply ship Makambo struck a submerged rock off Lord Howe Island, a volcanic dot 780 kilometres north-east of Sydney, Australia. The cargo was salvaged and taken ashore to the island, which is a semi-tropical paradise, lushly forested and rich in plants and animals found nowhere else.Bioluminescence is a primarily marine phenomenon. It is the predominant source of light in the largest fraction of the habitable volume of the earth, the deep ocean . In contrast, bioluminescence is essentially absent (with a few exceptions) in fresh water, even in Lake Baikal.
The Bioluminescence Web Page
University of Rochester Press Release
Mobile Genes Found to Pressure Species FormationPublic release date: 7-Dec-2005