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Latest Natural selection Stories

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2008-11-27 11:15:00

Scientists encourage 'continuous and effective management' and further study of these 'spectacular and emblematic' reptiles The Galapagos Islands, which provided impetus and inspiration for Charles Darwin's seminal work, "On the Origin of Species", are home to unique populations of reptiles. Since the time of man's first visit in the 16th century to this crucial incubator for evolutionary theory, the islands' native plants and animals have faced grave challenges, including severe pressures...

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2008-11-26 09:51:09

The utility of sex, according to an intriguing new theory of evolutionary biology, may be its ability to promote genes that play well with many other partners rather than those that shine with just one specific set of genes. This idea of genetic mixability, described in the journal Proceedings of the National Academy of Sciences the week of Nov. 24, hits on the difficulty evolutionary biologists have had in understanding sex, specifically its role in population genetics and Darwin's...

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2008-11-20 10:08:03

McGill researchers prove Darwin right about how evolution can affect a whole group The highly specialized worker castes in ants represent the pinnacle of social organization in the insect world. As in any society, however, ant colonies are filled with internal strife and conflict. So what binds them together? More than 150 years ago, Charles Darwin had an idea and now he's been proven right. Evolutionary biologists at McGill University have discovered molecular signals that can maintain...

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2008-11-13 11:30:45

A team of Princeton University scientists has discovered that chains of proteins found in most living organisms act like adaptive machines, possessing the ability to control their own evolution. The research, which appears to offer evidence of a hidden mechanism guiding the way biological organisms respond to the forces of natural selection, provides a new perspective on evolution, the scientists said. The researchers -- Raj Chakrabarti, Herschel Rabitz, Stacey Springs and George McLendon --...

2008-11-13 09:00:10

U.S. scientists have discovered the chains of proteins found in most living organisms act as adaptive machines, able to control their own evolution. Princeton University researchers said their finding appears to offer evidence of a hidden mechanism that guides the way biological organisms respond to the forces of natural selection. That, they said, provides a new perspective on evolution. Researchers Raj Chakrabarti, Herschel Rabitz, Stacey Springs and George McLendon made the discovery...

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2008-10-07 15:45:00

A leading British geneticist says that human evolution is coming to an end in the West due to a shortage of fathers over the age of 35, who are more likely to pass on genetic mutations to their children. During a lecture today at University College London (UCL) entitled "Human evolution is over", Professor Steve Jones argued the case that there are three components to evolution "“ mutation, natural selection and random change -- and that the mutation rate is declining.  ...

2008-10-01 15:00:10

DESPITE the impossibility of evolution ever happening, the evolutionist is certain that it has. The rigorously tested scientific evidence of evolution that J. C. Buchanan-Brown talks about is this: "We can make the point that, however improbable the (evolutionary) origin of life might be, we know it happened on Earth because we are here.'' (Richard Dawkins: The God Delusion, p137) He has also stated "I believe, but cannot prove, that all life, all intelligence, all creativity and all...

2008-09-17 03:00:11

By Wilson, David Sloan Wilson, Edward O The process known as group selection was once accepted unthinkingly, then was widely discredited; it's time for a more discriminating assessment Is evolution a team sport, or is the contest for survival played out strictly between individuals? There's no question that natural selection acts on individual organisms: Those with favorable traits are more likely to pass along their genes to the next generation. But perhaps similar processes could operate...

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2008-08-31 12:40:00

Shedding some genetically induced excess baggage may have helped a tiny fish thrive in freshwater and outsize its marine ancestors, according to a UBC study published Thursday in Science Express. Measuring three to 10 centimeters long, stickleback fish originated in the ocean but began populating freshwater lakes and streams following the last ice age. Over the past 20,000 years "“ a relatively short time span in evolutionary terms "“ freshwater sticklebacks have lost their bony...

2008-08-29 03:00:19

By Day, Matthew doi: 10.1017/S0009640708000863 Monkey Trials and Gorilla Sermons: Evolution and Christianity from Darwin to Intelligent Design. By Peter Bowler. New Histories of Science, Technology, and Medicine. Cambridge, Mass.: Harvard University Press, 2007. x + 258 pp. $24.95 cloth. Rummaging around for a title to his now-classic study of the religious movements that rocked central and western New York state during the first half of the nineteenth century, Whitney Cross decided that he...


Word of the Day
tessitura
  • The prevailing range of a vocal or instrumental part, within which most of the tones lie.
This word is Italian in origin and comes from the Latin 'textura,' web, structure.