姉し妹まい群ぐん

noun

sister group; sister taxon

Technical term in phylogenetics for the closest relative(s) of a given taxon.

• 系けい統とう樹じゅでは、チンパンジーはヒトの姉し妹まい群ぐんとされる。

  In the phylogenetic tree, chimpanzees are considered the sister group of humans.