mutation (A change in the chemical constitution of the DNA in the chromosomes of an organism: the changes are normally restricted to individual genes, but occasionally involve serious alteration to whole chromosomes. When a mutation occurs in gametes or gametocytes an inherited change may be produced in the characteristics of the organisms that develop from them. Mutation is one of the ways in which genetic variation is produced in organisms. A somatic mutation is one that occurs to a body cell, and is consequently past on to all the cells derived from it by mitosis. Natural mutations, at this stage of biological evolution, when they occur in the cells of higher animals, almost always produce deleterious characteristics. Both natural and artificial mutations can be brought about by ionizing radiation (hence the genetic and carcinogenic dangers of nuclear weapons) and by certain chemical substances called mutagens)

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Terms for subject Environment (24829 entries)

national administrator	nationaler Verwalter
National Allocation Plan	nationaler Plan für die Zuteilung von Zertifikaten für Treibhausgasemissionen
national allowance holding account	nationales Besitzkonto für Zertifikate
National Authority for Alternative Energy	Nationales Institut für Alternative Energien
National Biodiversity Strategy and Action Plan	nationale Strategie und Aktionsplan zugunsten der Artenvielfalt
national boundary (The line demarcating recognized limits of established political units)	Staatsgrenze
National Chemicals Inspectorate	Chemie-Aufsichtsbehörde
national civil protection services	nationale Katastrophenschutzdienste
national communication	nationale Mitteilung
national conservation programme	Nationales Umweltschutzprogramm
national economic costs (The amount of money incurred as a result of the financial management of a nation's financial resources)	Volkswirtschaftliche Kosten
national economy (A nation's financial resources and its financial management, with a view towards its productivity)	Volkswirtschaft
national emission ceiling	nationale Emissionsgrenze
national emission ceiling	nationale Emissionshöchstgrenze
national emission reduction plan	nationaler Emissionsverminderungsplan
national environmental accounting	Umweltökonomische Gesamtrechnung
national environmental accounting (The collection and processing of financial information regarding the costs for ecological challenges or opportunities for nations or countries)	Umweltökonomische Gesamtrechnung
National Environmental Policy Plan	Nationales Maßnahmenprogramm für die Umweltpolitik
National Environmental Protection Agency	Staatliches Amt für Umweltschutz
National Experts	Nationale Sachverständige

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