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Natural selection for enzyme variants among parthenogenetic Daphnia magna

Published online by Cambridge University Press:  14 April 2009

P. D. N. Hebert ,
R. D. Ward  and
J. B. Gibson
P. D. N. Hebert
Affiliation:
Department of Genetics, University of Cambridge, Milton Road, Cambridge CB4 1XH
R. D. Ward
Affiliation:
Department of Genetics, University of Cambridge, Milton Road, Cambridge CB4 1XH
J. B. Gibson
Affiliation:
Department of Genetics, University of Cambridge, Milton Road, Cambridge CB4 1XH
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Summary

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The frequencies of genetically determined electrophoretic variants of two enzyme systems in the parthenogenetic crustacean D. magna have been followed in two isolated populations. In both populations a marked excess of hetero-zygotes was found in the later samples. It is concluded that the observed changes in gene and genotypic frequencies are due to natural selection as both migration and genetic drift can be excluded.

Type
Short Papers
Information
Genetics Research , Volume 19 , Issue 2 , April 1972 , pp. 173 - 176
Copyright
Copyright © Cambridge University Press 1972

References

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