單系 | 私立大學五星教授網

而單系群（monophyletic group）又稱單系類群，即演化支，是源自一個最近的共同祖先並包括其所有已知後裔的全部分類單元，也是由共有衍征所界定的一個分支。亦 ...

- 單系群(Monophyly)：指其中的所有物種，只有一個共同的祖先，而且他們就是該祖先的所有後代。亦可被定義為依靠近裔共性歸類的類群。 - 並系群(Paraphyly)：指某一生物類群 ...

指一群物種擁有單一共同祖先。一個單源的分類單元包含共同祖先與其後代。一個單元群通常指一個進化枝，即一個生物與其後代。

A monophyletic taxon is one that includes a group of organisms descended from a single ancestor, whereas a polyphyletic taxon is composed of unrelated ...

A monophyletic group includes organisms with a common ancestor and closely related. The organisms will be branched from a common ancestor on a phylogenetic tree ...

A monophyletic group or clade is a group that consists of a common ancestor plus all descendants of that ancestor.

A monophyletic group, sometimes called a clade, includes an ancestral taxon and all of its descendants. A monophyletic group can be separated from the root ...