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 DICKERSON, G. E. Genetic slippage in response to selection for multiple objectives    213  ROBERTSON, ALAN. Selection in animals: Synthesis    225   GENETIC VARIABILITY AND POLYMORPHISM  FORD, E. B. Rapid evolution and the conditions which make it possible    230  ALLISON, A. C. Aspects of polymorphism in man    239  STONE, WILSON S. Genetic and chromosomal variability in Drosophila    256   SHEPPARD, P. M. Genetic variability and polymorphism: Synthesis    271  POPULATIONS IN TIME AND SPACE CARSON, HAMPTON L. The genetic characteristics of marginal populations. of Drosophila    276 NICHOLSON, A. J. Density governed reaction, the counterpart of selection in evolution    288  PREVOSTI, NTONIO. Geographical variability in quantitative traits in populations of Drosophila subobscura    294  BUZZATI-TRAVERSO, ADRIANO A. Populations in time and space Synthesis    300  INTEGRATION OF GENOTYPES  WALLACE, BRUCE, and VETUKHIV, M. Adaptive organization of the gene pools of Drosophila populations    303 KING, JAMES C. Evidence for the integration of the gene pool from studies of DDT resistance in Drosophila    311  THODAY, J. M. Balance, heterozygosity and developmental stability    318  CONCLUSION  LERNER, I. MICHAEL. Concluding survey    334 
 
 
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