Nature incredible discovery

28 Mar

IncredibleDarwin’s observation that “only the fittest survive”, was put under great doubt to a new study published in the edition of Nature.
Collaboration of universities of Exeter and Bath in the UK with a group from the University of San Diego in the U.S., challenges our current understanding of evolution, showing that biodiversity can develop where previously thought impossible.
This work represents a new approach to the study of evolution, which can lead to a better understanding of the diversity of bacteria that cause disease in humans.
The banal, the opinion states that for any niche to be the best species, the fittest of all that – eventually – begin to dominate, to exclude all others from the course of evolution.

This – the principle of natural selection. Environmentalists often called the idea “the principle of competition, which predicts that a complex environment essential for the maintenance of complex, diverse population groups.
“Microbiologists have tested this principle, designed in the laboratory of a very simple environment to see what would happen after hundreds of generations of bacterial evolution, about 3000 years in human terms. It was expected that the genome will survive only the fittest bacteria, which, of course, would not be discovery. However, the experiments gave rise to many unexpected genetic diversity, “said Professor Robert Beard more at the University of Exeter.
This got a “test-tube” biological variability caused great controversy, but one explanation was this: explicit leader to appear in the test tube is simply not enough time.
New research shows that these experiments – is not an anomaly.
“The key to a new understanding is the knowledge that the amount of energy organisms recovered from food depends on how much food they have. Give them plenty of food and they use it effectively.. When we combine this with the notion that organisms with different strategies of using food also depend on genetic mutations, we discover a new principle by which the “strong” and “weak” co-exist indefinitely, “said Professor Laurence Hurst from the University of Bath.
Dr. Ivan roared out of Exeter University explained that “strong” (fittest) individuals are not resistant to mutations, whereas the “weak” have the necessary stability. Thus, when there is a low level of mutations, working principle of “survival of the fittest”, otherwise – there is a possibility of saving a wide biodiversity. “

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Posted by on March 28, 2011 in Mysterious


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