First, there is speciation (species-splitting or cladogenesis), caused by geographical isolation or some other mechanism.
首先,因地理隔离或其它一些机制导形成(分裂或系枝化)。
First, there is speciation (species-splitting or cladogenesis), caused by geographical isolation or some other mechanism.
首先,因地理隔离或其它一些机制导形成(分裂或系枝化)。
Cook seems to have been the first to coin the term \'speciation\' for the splitting of lineages or \'cladogenesis,\' as opposed to \'anagenesis\' or \'phyletic evolution\' occurring within lineages.
这一术语与发生在世系内“前演化”或“化”这些提法相抵触。
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