primordial paired

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• Abiogenesis — Primordial soup redirects here. For the board game, see Primordial Soup (board game). Origin of life redirects here. For views on the origins of life outside the natural sciences, see Creation myth. Pre Cambrian stromatolites in the Siyeh… …   Wikipedia

• animal development — Introduction  the processes that lead eventually to the formation of a new animal starting from cells derived from one or more parent individuals. Development thus occurs following the process by which a new generation of organisms is produced by …   Universalium

• human embryology — ▪ biology Introduction       the process encompassing the period from the formation of an embryo, through the development of a fetus, to birth.       The human body, like that of most animals, develops from a single cell produced by the union of… …   Universalium

• 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

• swelling — 1. An enlargement, e.g., a protuberance or tumor. 2. In embryology, a primordial elevation that develops into a fold, ridge, or prominence. albuminous s. SYN: cloudy s.. ary …   Medical dictionary

• nervous system, human — ▪ anatomy Introduction       system that conducts stimuli from sensory receptors to the brain and spinal cord and that conducts impulses back to other parts of the body. As with other higher vertebrates, the human nervous system has two main… …   Universalium

• Nobel Prizes — ▪ 2009 Introduction Prize for Peace       The 2008 Nobel Prize for Peace was awarded to Martti Ahtisaari, former president (1994–2000) of Finland, for his work over more than 30 years in settling international disputes, many involving ethnic,… …   Universalium

• Iranian religion — Introduction       diverse beliefs and practices of the culturally and linguistically related group of ancient peoples who inhabited the Iranian Plateau and its borderlands, as well as areas of Central Asia from the Black Sea to Khotan (modern Ho …   Universalium

• Germ cell — Germ cells are progenitors of the gametes. These singled out cells move through the gut to the developing gonads and undergo mitotic proliferation followed by meiosis and differentiation into either eggs or sperm (mature gametes). Plants do not… …   Wikipedia

• Monoisotopic element — Not to be confused with the 22 mononuclidic elements, defined as those with only one significant naturally abundant nuclide. A monoisotopic element is one of 26 chemical elements which have only a single stable isotope (nuclide). A list is given… …   Wikipedia

• Kuiper belt — Known objects in the Kuiper belt, derived from data from the Minor Planet Center. Obje …   Wikipedia