1 Evidence for evolution is provided by homologous structures. 2  These are structures shared by related organisms that were inherited from a common ancestor. 3  Other evidence is provided by analogous structures. 4  These are structures that unrelated organisms share because they evolved to do the same job. Evidence for evolution is provided by homologous structures. 2  These are structures shared by related organisms that were inherited from a common ancestor. 3  Other evidence is provided by analogous structures. 4  These are structures that unrelated organisms share because they evolved to do the same job.
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