natural sterility

См. также в других словарях:

• Natural family planning — This article is about methods of family planning approved by the Catholic Church. For a more general use of the term, see fertility awareness. Natural family planning Background Birth control type behavioral First use Ancient: calendar, LAM mid… …   Wikipedia

• Cytoplasmic male sterility — is total or partial male sterility associated with plant biology as the result of specific nuclear and mitochondrial interactions.[1] Male sterility is the failure of plants to produce functional anthers, pollen, or male gametes. Contents 1… …   Wikipedia

• Drosophila hybrid sterility — The most common species definition in use today is the biological species concept of Ernst Mayr, which defines a species as a group of organisms which can mate and produce viable offspring. Drosophila are one of the most commonly used organisms… …   Wikipedia

• Timeline of natural disasters in the Azores — Here were the natural disasters that happened in the Azores Islands.1401 1500*Around 1432 first recorded famine in the Azores. *1439? 1444? Volcanic eruption on Sete Cidades, Miguel The eruption was not recorded especially the precise date for… …   Wikipedia

• Portree —    PORTREE, a parish, mostly in the Isle of Skye, and wholly in the county of Inverness; including the islands of Fladda, Rasay, and Rona; and containing 3574 inhabitants, of whom 510 are in the village of Portree, 25 miles (N. W.) from Broadford …   A Topographical dictionary of Scotland

• 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

• Endometriosis — Classification and external resources ICD 10 N80 I …   Wikipedia

• Hybrid (biology) — In biology and specifically, genetics, the term hybrid has several meanings, all referring to the offspring of sexual reproduction.[1] In general usage, hybrid is synonymous with heterozygous: any offspring resulting from the mating of two… …   Wikipedia

• Hybridism — is the occurrence of offspring of genetically dissimilar parents or stock, especially the offspring produced by breeding plants or animals of different varieties, species, or races. The term hybridism is believed to be derived from the Latin word …   Wikipedia

• radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… …   Universalium

• Selection methods in plant breeding based on mode of reproduction — This article discusses Selection methods in plant breeding based on mode of reproduction. Some plants reproduce by (more or less strict) self fertilization where pollen from a plant will fertilise reproductive cells or ovules of the same plant.… …   Wikipedia