…Since homology came to be understood historically, comparative anatomy has focused on the pursuit of evolutionary homology, and this trend has not changed to the present day. 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 it is differentiated into complete homology (homology of organs in which the structure of the ancestral type is maintained even if the shape or size has changed) and incomplete homology (homology of organs in which the components have increased or decreased, merged, or partially disappeared, and are no longer equivalent to the ancestral type). … *Some of the terminology explanations that mention "general homology" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…このように相同が歴史的にとらえられるようになってから,比較解剖学は進化的相同の追究を中心課題とするようになり,その傾向は現在でも変わっていない。 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。… ※「一般相同」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 |
<<: General Exercise - Ippan Taisou
>>: General theory of relativity
...meaning "Lord (Ahura) of wisdom (Mazda)&q...
A city in central Hebei Province, China. Populatio...
…Formally known as the Aikyo Juku, a self-run rur...
... The Middle Ages in Spain continued until the ...
… [Takashi Furuichi]. . … *Some of the terminolog...
A type of bronze (formerly called "koto"...
...Based on the book "Okubo Musashi Abumi,&q...
682‐720 The eighth caliph of the Umayyad dynasty. ...
A diffuse nebula in the constellation Cygnus. Two...
...However, in the 20th century, choreography was...
…From 1914 to 1930, he resumed realistic motifs, ...
… In cartilaginous fishes, which are ovoviviparou...
⇒ Seiichiro Otani Source: Kodansha Digital Japanes...
A plateau-like mountain range in the Pilbara regio...
A war literary work by Ooka Shohei. It was seriali...