biological species

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• biological species — concept A concept at the species level stressing reproductive isolation, and the possession of a genetic program effecting such isolation; biospecies; see species …   Dictionary of invertebrate zoology

• biological species — a species differing negligibly in morphology but remaining distinct because of ecological, physiological or ethological factors …   Dictionary of ichthyology

• biological species — noun : physiologic race …   Useful english dictionary

• 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

• 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

• species — I. noun (plural species) Etymology: Middle English, from Latin, appearance, kind, species, from specere to look more at spy Date: 14th century 1. a. kind, sort b. a class of individuals having common attributes and designated by a common name;… …   New Collegiate Dictionary

• species — 1. A biologic division between the genus and a variety or the individual; a group of organisms that generally bear a close resemblance to one another in the more essential features of their organization, and breed effectively producing fertile… …   Medical dictionary

• Biological pest control — Biological control of pests in agriculture is a method of controlling pests (including insects, mites, weeds and plant diseases) that relies on predation, parasitism, herbivory, or other natural mechanisms. It can be an important component of… …   Wikipedia

• Biological interaction — Biological interactions are the effects organisms in a community have on one another. In the natural world no organism exists in absolute isolation, and thus every organism must interact with the environment and other organisms. An organism s… …   Wikipedia

• Biological value — (BV) is a measure of the proportion of absorbed protein from a food which becomes incorporated into the proteins of the organism s body. It summarises how readily the broken down protein can be used in protein synthesis in the cells of the… …   Wikipedia

• Biological database — Biological databases are libraries of life sciences information, collected from scientific experiments, published literature, high throughput experiment technology, and computational analyses. They contain information from research areas… …   Wikipedia