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GENOTYPE‐BY‐ENVIRONMENT INTERACTIONS FOR FITNESS OF ERIGERON ANNUUS SHOW FINE‐SCALE SELECTIVE HETEROGENEITY
Author(s) -
Stratton Donald A.
Publication year - 1994
Publication title -
evolution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.84
H-Index - 199
eISSN - 1558-5646
pISSN - 0014-3820
DOI - 10.1111/j.1558-5646.1994.tb02199.x
Subject(s) - biology , natural selection , selection (genetic algorithm) , evolutionary biology , variation (astronomy) , biological dispersal , fitness landscape , stabilizing selection , genetic variation , directional selection , scale (ratio) , ecology , genetics , population , gene , demography , physics , quantum mechanics , artificial intelligence , sociology , astrophysics , computer science
The results of natural selection depend critically on whether variation in fitness is finegrained or coarse‐grained with respect to dispersal, but little is known of the spatial scale of fitness variation in natural populations. For most evolutionary questions, environmental heterogeneity must be defined by reversals in the relative fitness of genotypes; absolute fitness may vary, but if genotypes respond in parallel then selection is uniform. Thus, measurements of genotype‐by‐environment (G × E) interactions for fitness are necessary to understand patterns of variation in natural selection.