such as "Introduction", "Conclusion"..etc
Researchers from Imperial College London believe that when species become asexual they could be on their way to extinction.
Evolutionary theory predicts that while asexual organisms can initially prosper and outcompete their sexual cousins, they ultimately pay the price for being unable to adapt through the recombination of genes caused by sexual reproduction.
Even though the fungus makes spores which can spread over very large distances, the researchers found that all the samples from any given location were genetically very similar. This led them to the conclusion that the fungus becomes highly adapted to its local environment, making it highly successful there, but stopping it spreading to other areas.
Dr Bill Hanage, one of the paper's authors, from Imperial College London, adds: "By being asexual, P. marneffei is not only limiting its ability to adapt, it may be at risk of becoming extinct. If it is unable to adapt to new environments, it will be unable to adapt to changes in its current environment. While becoming asexual may provide short term advantages to a species, in the long term, they are likely to end up in evolution's ultimate dustbin -- extinction."
Source: Imperial College London. October 2005.
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