| 单词 | gastraea theory |
| 释义 | > as lemmasgastraea theory 2. A primitive sac-like animal, whose existence is assumed by Haeckel, consisting of two layers of cells, an ectoderm and an endoderm. gastraea theory, the theory which supposes this to have been the ancestral form of the whole animal kingdom. ΘΚΠ the world > life > biology > theories > [noun] > of genetics or evolution theory of preformation1756 Darwinizing1807 development hypothesis1845 generationism1847 theory of evolution1858 Darwinism1860 Darwinianism1861 monogenesis1864 monogenism1865 monogeny1865 pangenesis1868 evolutionism1869 phylogeny1869 polygenism1871 derivation1874 phylogenesis1875 transformism1878 biogenetic law1879 gastraea theory1879 fortuitism1881 organicism1883 hereditism1884 kinetogenesis1884 Lamarckianism1884 Lamarckism1884 neo-Lamarckianism1884 monogenesy1885 neo-Lamarckism1887 preformationism1890 neo-Darwinism1891 blastogenesis1893 Haeckel-ismus1894 Weismannism1894 preformism1895 Haeckelism1899 mutation theory1902 directivity1903 Mendelianism1903 Mendelism1903 hereditarianism1906 mutationism1912 selectionism1912 hologenesis1931 parsimony1931 Morganism1934 Lysenkoism1948 neutralism1972 punctuated equilibrium1972 saltationism1975 punctuationism1977 punctuationalism1978 adaptationism1980 geneticism1984 adaptationalism1985 the world > animals > invertebrates > subkingdom Metazoa > grade Diploblastica > [noun] > gastraea gastraea1879 1879 tr. E. Haeckel Evol. Man I. 9 A very ancient ancestral form is represented by the two-layered Gastræa. 1879 tr. E. Haeckel Evol. Man I. 250 These are the principles of the unified or monophyletic genealogy of the animal kingdom, as they present themselves, provisionally, according to the Gastræa Theory. 1892 Nation (N.Y.) 21 Apr. 309/2 The author is thoroughly permeated by the gastraea myth. < as lemmas |
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