spontaneous parthenogenesis

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• parthenogenesis — Synonyms and related words: abiogenesis, archigenesis, biogenesis, birth, blastogenesis, development, digenesis, epigenesis, eumerogenesis, generation, genesis, heterogenesis, histogenesis, homogenesis, isogenesis, merogenesis, metagenesis,… …   Moby Thesaurus

• reproductive system, animal — Introduction       any of the organ systems by which animals reproduce.       The role of reproduction is to provide for the continued existence of a species; it is the process by which living organisms duplicate themselves. Animals compete with… …   Universalium

• Animal sexual behaviour — This article is about the sexual behaviour of non human animals; see also Human sexuality and Sexual reproduction. Animal sexual behaviour takes many different forms, even within the same species. Among animals other than humans, researchers have …   Wikipedia

• plant — plantable, adj. plantless, adj. plantlike, adj. /plant, plahnt/, n. 1. any member of the kingdom Plantae, comprising multicellular organisms that typically produce their own food from inorganic matter by the process of photosynthesis and that… …   Universalium

• Timeline of zoology — A preliminary timeline of the history of zoology before the 1859 publication of Darwin s Origin of Species . Ancient world *28000 BC. Cave painting (e.g. Chauvet cave [http://www.culture.gouv.fr/culture/arcnat/lascaux/en/] ) in Europe, especially …   Wikipedia

• evolution — evolutional, adj. evolutionally, adv. /ev euh looh sheuhn/ or, esp. Brit., /ee veuh /, n. 1. any process of formation or growth; development: the evolution of a language; the evolution of the airplane. 2. a product of such development; something… …   Universalium

• Jean Rostand — (October 30, 1894 September 4, 1977) was a French biologist and philosopher.Active as an experimental biologist, Rostand became famous for his work as a science writer, as well as a philosopher and an activist. His scientific work covered a… …   Wikipedia

• Leeuwenhoek, Antonie van — born Oct. 24, 1632, Delft, Neth. died Aug. 26, 1723, Delft Dutch microscopist. In his youth he was apprenticed to a draper; a later civil position allowed him to devote time to his hobby: grinding lenses and using them to study tiny objects. With …   Universalium

• generation — 1. SYN: reproduction (1). 2. A discrete stage in succession of descent; e.g., father, son, and grandson are three generations. [L. generatio, fr. genero, pp. atus, to beget] asexual g. reproduction by fission, gemmation, or in any other way… …   Medical dictionary

• Production — (Roget s Thesaurus) < N PARAG:Production >N GRP: N 1 Sgm: N 1 1 =>{ant,162,158} production creation construction formation fabrication manufacture Sgm: N 1 building building architecture erection edification Sg …   English dictionary for students

• Polyploidy — occurs in cells and organisms when there are more than two homologous sets of chromosomes.Most organisms are normally diploid; polyploidy may occur due to abnormal cell division. It is most commonly found in plants. Haploidy may also occur as a… …   Wikipedia