Darwin's Tree of Life May Be More Like a Thicket

(PhysOrg.com) -- In On The Origin of Species, Darwin used the image of a tree of life to illustrate how species evolve, one from another. Even today, branches sprouting from lower branches (representing ancestors) is how many people view the evolution of species.

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<p><a href="http://www.physorg.com/news152274071.html">Darwin's Tree of Life May Be More Like a Thicket</a></p> <p>(PhysOrg.com) -- In <i>On The Origin of Species</i>, Darwin used the image of a tree of life to illustrate how species evolve, one from another. Even today, branches sprouting from lower branches (representing ancestors) is how many people view the evolution of species. </p>