Evolution is regarded as a branching process, whereby populations are altered over time and may speciate into separate branches, hybridize together, or terminate by extinction.

　
英 美
  • 進(jìn)化被視為一個(gè)分枝過(guò)程；隨著(zhù)時(shí)間的推移，種群發(fā)生改變，種群也可能進(jìn)化成為分枝，也可能相互雜交或滅絕終止。
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