Complete homology

… At the end of the 19th century, German comparative anatomist Karl Gegenbaur (1826-1903) divided homology into two groups: specific homology and general homology. The former is homology between different species in the narrow sense, and he distinguishes between complete homology (homology between organs whose ancestral structure remains intact even if their shape or size changes) and incomplete homology (homology between organs whose components have increased or decreased, merged, or partially disappeared, making them no longer equivalent to their ancestral form). The latter is homology within the same individual in the broad sense, and he recognized three types: homotypy (homology between paired organs in an individual), homovalence (homology between organs that are repeatedly arranged along the anterior-posterior axis of the body), and homoplasy (homology between the parts that make up an organ). …

*Some of the terminology explanations that mention "complete homology" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…　19世紀末にドイツの比較解剖学者ゲーゲンバウアーKarl Gegenbaur(1826‐1903)は相同を〈特殊相同〉と〈一般相同〉の2群に整理したことがある。前者は異種生物間の狭義の相同で，これに完全相同(形や大きさは変わっても祖先型の構造がそのまま維持されている器官の相同)と不完全相同(構成要素に増減，合体，部分的消失などが起こり祖先型と等価でなくなった器官の相同)を区別する。また後者は同一個体内での広義の相同で，同型(個体内で左右の対をなす器官の相同)，同価(体の前後軸にそって反復的に並ぶ器官の相同)，および同規(ある器官をつくる諸部分の間の相同)の3種を認めた。…

※「完全相同」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報