- theory of origin species
- 吸根
Medical Chinese dictionary (湘雅医学词典). 2013.
theory of origin species
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Species — In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is … Wikipedia
Origin — Origin, origins, or original may refer to: Contents 1 Beginning of the universe and life 2 Science and technology 3 Computer … Wikipedia
On the Origin of Species — Origin of Species redirects here. For other uses, see Origin of Species (disambiguation). On the Origin of Species … Wikipedia
Origin of birds — For the book by Gerhard Heilmann, see The Origin of Birds (book). The famous Berlin specimen of Archaeopteryx lithographica The origin of birds is a contentious and central topic within evolutionary biology. A close relationship between birds and … Wikipedia
Origin of language — The origin of language is the emergence of language in the human species. This is a highly controversial topic, empirical evidence being so limited that many regard it as unsuitable for serious scholars. In 1866, the Linguistic Society of Paris… … Wikipedia
Origin of AIDS — False color scanning electron micrograph of HIV 1, in green, budding from cultured lymphocyte. AIDS is caused by the Human immunodeficiency virus (HIV), which originated in non human primates in Sub Saharan Africa and was transferred to humans… … Wikipedia
Species problem — The species problem is a mixture of difficult, related questions that often come up when biologists identify species and when they define the word species .One common but sometimes difficult question is how best to decide just which particular… … Wikipedia
Origin and function of meiosis — Eukaryotes are organisms with a true nucleus in which the DNA genome is enclosed in a double membrane (e.g. fungi, protozoans, vertebrates, higher plants), in contrast to prokaryotes (bacteria and blue green algae) that lack a nuclear membrane.… … Wikipedia
Origin of the Romanians — History of Romania This article is part of a series Prehistory … Wikipedia
Origin of avian flight — The Berlin Archaeopteryx, one of the earliest known birds. Evolution of flight redirects here. See also flying and gliding animals and insect flight. Around 350 BCE, Aristotle and other philosophers of the time were attempting to explain the… … Wikipedia
Species distribution — A species range maps represents the geographical region where individuals of a species can be found. This is a range map of Juniperus communis, the common juniper. Species distribution is the manner in which a biological taxon is spatially… … Wikipedia
