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heterogenesis
heterogenesis (ˌhɛtərəʊˈdʒɛnɪsɪs) n (Biology) another name for alternation of generations, abiogenesis heterogenetic, ˌheteroˈgenic adj ˌheterogeˈnetically advhet•er•o•gen•e•sis (ˌhɛt ər əˈdʒɛn ə sɪs) also het•er•og•e•ny (-əˈrɒdʒ ə ni)
n. alternation of generations, esp. the alternation of parthenogenetic and sexual generations. [1850–55] het`er•o•ge•net′ic (-ə roʊ dʒəˈnɛt ɪk) adj. het`er•o•ge•net′i•cal•ly, adv. heterogenesis1. reproduction by a sexual and asexual process alternately. Cf. heterogamy.
2. reproduction in which the parent bears offspring different from itself. Cf. xenogenesis. — heterogenetic, adj.
3. abiogenesis.See also: BiologyThesaurus| Noun | 1. | heterogenesis - the alternation of two or more different forms in the life cycle of a plant or animalalternation of generations, xenogenesisorganic phenomenon - (biology) a natural phenomenon involving living plants and animalsdigenesis, metagenesis - alternation of sexual and asexual generations |
Heterogenesis
heterogenesis[¦hed·ə·rō′jen·ə·səs] (biology) Alternation of generations in a complete life cycle, especially the alternation of a dioecious generation with one or more parthenogenetic generations. Heterogenesis (1) Change in the means of reproduction in organisms during two or more generations; a particular case of alternation of generations. (2) The sudden appearance of individuals differing sharply in a number of traits from the parent forms. This phenomenon served as the basis for the appearance of the heterogenetic theory of the origin of species by means of the sudden appearance of individuals differing sharply from the parent forms. (This theory was proposed by the German histologist R. A. von Kölliker in 1864 and the Russian botanist S. G. Korzhinskii in 1899.) heterogenesis
heterogenesis [het″er-o-jen´ĕ-sis] 1. metagenesis.2. asexual generation.het·er·o·gen·e·sis (het'ĕr-ō-jen'ĕ-sis), 1. Alternation of generations. 2. Synonym(s): asexual generation3. Synonym(s): spontaneous generation [hetero- + G. genesis, production] het·er·o·gen·e·sis (het'ĕr-ō-jen'ĕ-sis) 1. Alternation of generations. 2. Synonym(s): asexual generation. 3. Synonym(s): spontaneous generation. [hetero- + G. genesis, production]heterogenesis
Synonyms for heterogenesisnoun the alternation of two or more different forms in the life cycle of a plant or animalSynonyms- alternation of generations
- xenogenesis
Related Words- organic phenomenon
- digenesis
- metagenesis
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