Definition of Gastraea. Meaning of Gastraea. Synonyms of Gastraea

Here you will find one or more explanations in English for the word Gastraea. Also in the bottom left of the page several parts of wikipedia pages related to the word Gastraea and, of course, Gastraea synonyms and on the right images related to the word Gastraea.

Definition of Gastraea

Gastraea
Gastraea Gas*tr[ae]"a, n. [NL., from Gr. ?, ?, the stomach.] (Biol.) A primeval larval form; a double-walled sac from which, according to the hypothesis of Haeckel, man and all other animals, that in the first stages of their individual evolution pass through a two-layered structural stage, or gastrula form, must have descended. This idea constitutes the Gastr[ae]a theory of Haeckel. See Gastrula.

Meaning of Gastraea from wikipedia

- paedomorphosis, and could reproduce without p****ing through a sessile phase. The gastraea hypothesis was proposed by Ernst Haeckel in 1874, shortly after his work...
- a gradual evolution of cell differentiation, as affirmed in Haeckel's gastraea theory. About 800 million years ago, a minor genetic change in a single...
- Haeckel was a German evolutionist and zoologist known for proposing the gastraea hypothesis. In 1866, August Leskien, a pioneer of research into sound laws...
- specifically, the biogenic theory (German: biogenetisches Grundgesetz) and the "gastraea theory" of Haeckel. Within 10 years, the two brothers moved apart to the...
- e. the biogenic theory (German = biogenetisches Grundgesetz), and the "gastraea theory". Within 10 years, the two brothers moved apart to the north and...
- cycle evolution: was the eumetazoan ancestor a holopelagic, planktotrophic gastraea?". BMC Evolutionary Biology. 13 (1): 171. Bibcode:2013BMCEE..13..171N....
- Benjamin; Lukas, Paul; Olsson, Lennart (2022). "The biogenetic law and the Gastraea theory: From Ernst Haeckel's discoveries to contemporary views". Journal...