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Physics and math shed new light on biology by mapping the landscape of evolution
Date:8/8/2012

relative fitness, even if the physical environment is unchanged.

This finding offers a theoretical framework to explain the Red Queen Hypothesis, which states that species continually evolve in order to fend off parasites that are themselves continually evolving. The hypothesis, first proposed by evolutionary biologist Leigh Van Valen in 1973, gets its name from the character of the Red Queen in Lewis Carroll's book Through the Looking-Glass, who observed that in her world it was necessary to keep running just to stay in one place. The idea of endless co-evolution through the maintenance of the genetic variation due to the curl flux could help explain the benefits of sexual reproduction, since the mixing and matching of genes preserves a greater diversity of traits. When a species' arms race with a co-evolving parasite takes an unexpected twist, a previously unnecessary trait could suddenly turn into the key to surviving. In the co-evolving world, there is no guarantee for "survival of the fittest" and it is often necessary to keep running for survival. The researchers publish their results in the American Institute of Physics' Journal of Chemical Physics.


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Contact: Catherine Meyers
cmeyers@aip.org
301-209-3088
American Institute of Physics
Source:Eurekalert

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