Darwin's ToL was cut down. What church do you attend now or is it still not attend?
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Charles Darwin's "tree of life", which shows how species are related through evolutionary history, is wrong and needs to be replaced, according to leading scientists.
The great naturalist first sketched how species might evolve along branches of an imaginary tree in 1837, an idea that quickly came to symbolise the theory of evolution by natural selection.
But modern genetics has revealed that representing evolutionary history as a tree is misleading, with scientists saying a more realistic way to represent the origins and inter-relatedness of species would be an impenetrable thicket. Darwin himself also wrote about evolution and ecosystems as a "tangled bank".
"We have no evidence at all that the tree of life is a reality," Eric Bapteste, an evolutionary biologist at the
Pierre and Marie Curie University in Paris, told
New Scientist magazine.
Genetic tests on bacteria, plants and animals increasingly reveal that different species crossbreed more than originally thought, meaning that instead of genes simply being passed down individual branches of the tree of life, they are also transferred between species on different evolutionary paths. The result is a messier and more tangled "web of life".
Microbes swap genetic material so promiscuously it can be hard to tell one type from another, but animals regularly crossbreed too - as do plants - and the offspring can be fertile. According to some estimates, 10 per cent of animals regularly form hybrids by breeding with other species."
Crossbreeding between species is far more common than previously thought, turning the tree of life into a thicket
www.theguardian.com
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