- operational taxonomic unit
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A terminal node in phylogenetic analysis; an organism. External nodes: things under comparison; operational taxonomic units
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operational taxonomic unit
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OTU — Operational Taxonomic Unit; any convenient taxonomic unit used in cladistics and phenetics … Expanded glossary of Cycad terms
Type (biology) — Type specimen for Cimbrophlebia brooksi, a fossil scorpion fly. By convention, the red label denotes a type specimen. In biology, a type is one particular specimen (or in some cases a group of specimens) of an organism to which the scientific… … Wikipedia
Otu — or OTU may refer to: Otu, Siga, Japan Otú Airport, an airport in the village of Otú and serving the town of Remedios, Colombia Operational taxonomic unit Operational Training Unit Optical channel Transport Unit, a layer of the Optical Transport… … Wikipedia
OTU — comp. abbr. Operational Taxonomic Unit … United dictionary of abbreviations and acronyms
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
Commensurability (philosophy of science) — This article is about incommensurability in the philosophy of science. For other senses of this word, see commensurability. Commensurability (contrast with incommensurability) is a concept in the philosophy of science. Scientific theories are… … Wikipedia
environment — environmental, adj. environmentally, adv. /en vuy reuhn meuhnt, vuy euhrn /, n. 1. the aggregate of surrounding things, conditions, or influences; surroundings; milieu. 2. Ecol. the air, water, minerals, organisms, and all other external factors… … Universalium
reptile — reptilelike, adj. reptiloid /rep tl oyd /, adj. /rep til, tuyl/, n. 1. any cold blooded vertebrate of the class Reptilia, comprising the turtles, snakes, lizards, crocodilians, amphisbaenians, tuatara, and various extinct members including the… … Universalium
Marcellus Formation — Stratigraphic range: Middle Devonian … Wikipedia
nature, philosophy of — Introduction the discipline that investigates substantive issues regarding the actual features of nature as a reality. The discussion here is divided into two parts: the philosophy of physics and the philosophy of biology. In this… … Universalium
