zarahh09
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What can classification tell us about evolutionary relationships between organisms?

Classification is the systematic grouping of organisms based on structural or functional similarities or evolutionary history. A process of ranking the species within hierarchical series of groups?
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OxFossil
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(Original post by zarahh09)
What can classification tell us about evolutionary relationships between organisms?

Classification is the systematic grouping of organisms based on structural or functional similarities or evolutionary history. A process of ranking the species within hierarchical series of groups?
Not sure what you are asking for, but broadly:

Back in ye olden days, before DNA/gene sequencing was possible, organisms were classified mainly according to anatomical similarities. For example, you would put animals with very simlar anatomies into the same genus, with slightly lesser similarities further away - perhaps in the same family but a different genus and so on.

When this was done by Linnaeus, in the 18th century, people still had not come up with the idea of evolution by natural selection. the classigfication was just to demonstrate likelness.

Once Darwin's theory had been accepted, it became clear that these relationships were not accidental - they represented the story of how species and groips develop from a common ancestor. The closer one animal was to another in the classification hierarchy. the more recently they had a common ancestor. When it became possible to analyse the genetics of animals. it became possible to see this history much more clearly - we can now use DNA sequences to construct classificaions that show the likely evolutionary history of life with a high degree of accuracy.
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