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Clad is a red link, so I replaced it with what I hope is the synonymous "group of species" - correct me if I've guessed wrong here
'''Common descent''' is an idea in [[Biology]] which is applied on two levels, with a [[clad]] (group of species) being said to share a recent common ancestor, or the broader conjecture which asserts that all organisms on earth originated from common ancestors. The idea of common descent is usually associated with Darwin's [[Theory of Evolution]].
'''Common descent''' is an idea in [[Biology]] which is applied on two levels, with a group of species being said to share a recent common ancestor, or the broader conjecture which asserts that all organisms on earth originated from common ancestors. The idea of common descent is usually associated with Darwin's [[Theory of Evolution]].
Darwin wrote:
Darwin wrote: