祖そ先せん形けい質しつ共きょう有ゆうMeaningsNoun1. symplesiomorphy; ancestral trait shared by two or more taxaKanji used祖grandparent先before (timewise)形shape質quality共together有be in possessionComposed of祖そ先せんancestorNoun形けい質しつ(phenotypic) trait; (hereditary) character; alleleNoun共きょう有ゆうjoint ownership; co-ownership; sharing (e.g. a viewpoint); sharing (files, devices on a network, posts on social media, etc.)Noun