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The distribution of heterozygosity in temperate and tropical species of Drosophila

Published online by Cambridge University Press:  14 April 2009

B. D. H. Latter
B. D. H. Latter
Affiliation:
Faculty of Agriculture, University of Sydney, 2006, Australia
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Electrophoretic surveys for nine species of Drosophila have been summarized in terms of the relative contribution to heterozygosity of each of ten gene frequency classes, the mean frequency of heterozygotes within subpopulations, and the degree of genetic divergence between subpopulations. It has been shown that the neutral model proposed by Kimura, and modified by Ohta to include the accumulation of slightly disadvantageous mutations, is capable of explaining all features of the data. The consistent difference between group I and group II enzymes can be explained by a difference in the average intensity of selection against mutational variants in the two groups. A highly significant difference between the temperate and tropical species in the distribution of heterozygosity appears to be due to the smaller effective breeding population sizes in the case of the temperate species.

Type
Research Article
Information
Genetics Research , Volume 38 , Issue 2 , October 1981 , pp. 137 - 156
Copyright
Copyright © Cambridge University Press 1981

References

REFERENCES

Ayala, F. J., Powell, J. R. & Dobzhansky, Th. (1971). Polymorphisms in continental and island populations of Drosophila willistoni. Proceedings of the National Academy of Sciences, U.S.A. 68, 2480–2483.Google Scholar
Ayala, F. J., Powell, J. R. & Tracey, M. L. (1972 a). Enzyme variability in the Drosophila willistoni group. V. Genie variation in natural populations of Drosophila equinoxialis. Genetical Research 20, 19–42.Google Scholar
Ayala, F. J., Powell, J. R., Tracey, M. L., Mourao, C. A. & Perez-Salas, S. (1972 b). Enzyme variability in the Drosophila willistoni group. IV. Genie variation in natural populations of Drosophila willistoni. Genetics 70, 113–139.Google Scholar
Ayala, F. J., Tracey, M. L., Barr, L. G., Mcdonald, J. F. & Perez-Salas, S. (1974). Genetic variation in natural populations of five Drosophila species and the hypothesis of the selective neutrality of protein polymorphisms. Genetics 77, 343–384.CrossRefGoogle ScholarPubMed
Gillespie, J. H. & Kojima, K. (1968). The degree of polymorphism in enzymes involved in energy production compared to that in nonspecific enzymes in two Drosophila ananassae populations. Proceedings of the National Academy of Sciences, U.S.A. 61, 582–585.CrossRefGoogle ScholarPubMed
Johnson, G. B. (1974). On the estimation of effective numbers of alleles from electrophoretic data. Genetics 78, 771–776.Google Scholar
Kimura, M. (1968). Evolutionary rate at the molecular level. Nature 217, 624–626.Google Scholar
Kimura, M. (1969). The rate of molecular evolution considered from the standpoint of population genetics. Proceedings of the National Academy of Sciences, U.S.A. 63, 1181–1188.Google Scholar
Kimura, M. & Crow, J. F. (1964). The number of alleles that can be maintained in a finite population. Genetics 49, 725–738.Google Scholar
Kimura, M. & Ohta, T. (1975). Distribution of allelic frequencies in a finite population under stepwise production of neutral alleles. Proceedings of the National Academy of Sciences, U.S.A. 72, 2761–2764.Google Scholar
King, J. L. & Ohta, T. (1975). Polyallelic mutational equilibria. Genetics 79, 681–691.CrossRefGoogle ScholarPubMed
Koehn, R. K. & Eanes, W. F. (1977). Subunit size and genetic variation of enzymes in natural populations of Drosophila. Theoretical Population Biology 11, 330–341.CrossRefGoogle ScholarPubMed
Kojima, K., Gillespie, J. H. & Tobari, Y. N. (1970). A profile of Drosophila species' enzymes assayed by electrophoresis. I. Number of alleles, heterozygosities, and linkage disequilibrium in glucose-metabolizing systems and some other enzymes. Biochemical Genetics 4, 627–637.CrossRefGoogle ScholarPubMed
Kojima, K., Smouse, P., Yang, S., Nair, P. S. & Brncic, D. (1972). Isozyme frequency patterns in Drosophila pavani associated with geographical and seasonal variables. Genetics 72, 721–731.CrossRefGoogle ScholarPubMed
Latter, B. D. H. (1972). Selection in finite populations with multiple alleles. III. Genetic divergence with centripetal selection and mutation. Genetics 70, 475–490.Google Scholar
Latter, B. D. H. (1973). The island model of population differentiation: a general solution. Genetics 73, 147–157.CrossRefGoogle ScholarPubMed
Latter, B. D. H. (1975). Influence of selection pressures on enzyme polymorphisms in Drosophila. Nature 257, 590–592.Google Scholar
Latter, B. D. H. (1976). The intensity of selection for electrophoretic variants in natural population of Drosophila. In Population Genetics and Ecology (ed. Karlin, S. and Nevo, E.), pp. 391–410.Google Scholar
Li, W.-H. (1978). Maintenance of genetic variability under the joint effect of mutation, selection and random drift. Genetics 90, 349–382.CrossRefGoogle ScholarPubMed
Li, W.-H. (1979). Maintenance of genetic variability under the pressure of neutral and deleterious mutations in a finite population. Genetics 92, 647–667.CrossRefGoogle Scholar
Maruyama, T. (1972). Some invariant properties of a geographically structured finite population: distribution of heterozygotes under irreversible mutation. Genetical Research 20, 141–149.CrossRefGoogle ScholarPubMed
Ohta, T. (1974). Mutational pressure as the main cause of molecular evolution and polymorphisms. Nature 252, 351–354.Google Scholar
Ohta, T. (1976). Role of very slightly deleterious mutations in molecular evolution and polymorphism. Theoretical Population Biology 10, 254–275.Google Scholar
Ohta, T. & Kimura, M. (1973). A model of mutation appropriate to estimate the number of electrophoretically detectable alleles in a finite population. Genetical Research 22, 201–204.CrossRefGoogle Scholar
Prakash, S. (1973). Patterns of gene variation in central and marginal populations of Drosophila robusta. Genetics 75, 347–369.Google Scholar
Prakash, S., Lewontin, R. C. & Hubby, J. L. (1969). A molecular approach to the study of genic heterozygosity in natural populations. IV. Patterns of genie variation in central, marginal and isolated populations of Drosophila pseudoobscura. Genetics 61, 841–858.Google Scholar
Richmond, R. C. (1972). Enzyme variability in the Drosophila willistoni group. III. Amounts of variability in the superspecies D. paulistorum. Genetics 70, 87–112.Google Scholar
Saura, A. (1974). Genic variation in Scandinavian populations of Drosophila bifasciata. Hereditas 76, 161–172.Google Scholar
Saura, A., Lakovaara, S., Lokki, J. & Lankinen, P. (1973). Genie variation in central and marginal populations of Drosophila subobscura. Hereditas 75, 33–46.Google Scholar
Wright, S. (1966). Polyallelic random drift in relation to evolution. Proceedings of the National Academy of Sciences, U.S.A. 55, 1074–1081.CrossRefGoogle ScholarPubMed
Yamazaki, T. & Maruyama, T. (1972). Evidence for the neutral hypothesis of protein polymorphism. Science 178, 56–58.Google Scholar