Chinese 並系群 Cited by user 蕭漫 on 09 Jan 2022 並系(英文:paraphyly 或 paraphyletic)又称並源,是系统发生学上常用的概念,指某一生物类群包含了一个祖先及其部分後代,未包含其所有後代。这种由同一祖先演化而来的部分後代所组成的类群,被称为並系群(英文:paraphyletic group,又译作偏系群或侧系群)。通常並系群包含了与祖先相比性状变化不大的成员,而变化更大…
English Paraphyly Cited by user La marts boys on 20 Jul 2018 In taxonomy, a group is paraphyletic if it consists of the group's last common ancestor and all descendants of that ancestor excluding a few—typically only one or two—mono…