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Titolo:
EVOLUTIONARY PROCESSES AND THEORY - THE ECOLOGICAL-GENETICS INTERFACE
Autore:
NEVO E;
Indirizzi:
UNIV HAIFA,INST EVOLUT IL-31905 HAIFA ISRAEL
Titolo Testata:
Water science and technology
fascicolo: 7-8, volume: 27, anno: 1993,
pagine: 489 - 496
SICI:
0273-1223(1993)27:7-8<489:EPAT-T>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
WILD EMMER WHEAT; MICROGEOGRAPHIC EDAPHIC DIFFERENTIATION; ALLOZYME POLYMORPHISMS; NATURAL-SELECTION; TRITICUM-DICOCCOIDES; BARLEY; RESOURCES; DIVERSITY; PATTERNS; ISRAEL;
Keywords:
ECOLOGICAL-GENETICS INTERFACE; GENETIC DIVERSITY; ECOLOGICAL DIVERSITY; ADAPTATIONS; NATURAL SELECTION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
70
Recensione:
Indirizzi per estratti:
Citazione:
E. Nevo, "EVOLUTIONARY PROCESSES AND THEORY - THE ECOLOGICAL-GENETICS INTERFACE", Water science and technology, 27(7-8), 1993, pp. 489-496

Abstract

The evolutionary process is reviewed in terms of the ecological-genetics interface based on genetic diversity in natural populations of plants and animals, using the environmental-genetic correlation methodology at three geographic levels: (1) Local, several species in Israeli microsites; (2) Regional. 21 species across Israel and 2 species in theNear East; and (3) Global. 1111; 184 and 189 species in three studiesacross the planet. The species analyzed are taxonomically unrelated, and vary in their ecologies, demographies, life histories, and other biological variables. They were mostly tested by horizontal starch gel electrophoresis for allozymic diversity, averaging 25 gene loci, and other genetic polymorphisms. In addition, ten studies involved DNA polymorphisms. The following results were found at all three geographic levels: (1) The levels of genetic diversity vary nonrandomly and are structured within and among populations, species, and higher taxa; and (2) Genetic diversity is correlated with niche width, and partly predictable, primarily by ecological factors. These results corroborate the adaptive, environmental theory of genetic diversity. They were also verified for several allozyme loci in controlled laboratory experiments in pollution biology. Natural selection in its various forms appears tobe a major force maintaining. differentiating and orienting evolutionary change in protein and DNA polymorphisms.

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Documento generato il 05/12/20 alle ore 08:10:36