Abstract
Drosophila pseudoobscura from the cundiboyacense Altiplano presents a populational structure consisting in small demes subjected to extinction, recolonization and migration. Whether or not population dynamics can be explained "under a neutral frame is a matter of discussion in this paper. A mathematical model predicting the expected effective number of alleles under the neutral hypothesis is reviewed. The model does not present any variance calculations, and requires stochastic independence between the intrademe gene identity and the inverse of the effective population size.
References
CROW, J. F., and M. KIMURA, 1970. An Introduction to Population Genetics Theory. Harper & Row, New York, reprint by Burgess, Minneapolis.
HOENIGSBERG, H. F., 1986. Population Genetics in the American Tropics XXVI. Colonizing attempts of Drosophila pseudoobscura in Colombia. 1st Iberoamerican Symposium of Evolutionary Genetics (in press).
DOBZHANSKY, Th., and H. F. HOENIGSBERG, 1974. Unpublished work.
KIMURA, M., and J. F. CROW, 1964. The number of alleles that can be maintained in a finite population. Genetics 49: 725-738.
MARUYAMA, T., and M. KIMURA, 1980. Genetic variability and effective population size when local extinction and recolonization of subpopulations are frequent. Proc. Natl. Acad. Sci., U.S.A. 77: 6710-6714.
MAYR, E., 1954. Change of genetic environment and evolution p. 157-180. In Huxley, A. C., Hardy and E. B. Ford (eds.), Evolution as a Process. Allen and Unwin, London.
NEI, M., T. MARUYAMA and R. CHAKRABORTY, 1975. The bottleneck effect and genetic variability in populations. Evolution 29: 1-10.
OHTA, T. and M. KIMURA, 1973. A model of mutation appropriate to estimate the number of electrophoretically detectable alleles in a finite population. Genet. Res. Camb. 22: 201-204.
WRIGHT, S., 1931. Evolution in Mendelian populations. Genetics 16: 97-159.

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright (c) 2025 Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales
