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Inbreeding in artificial selection programmes

  • Alan Robertson (a1)

Extract

In a population under artificial selection, the effective population size may be less than the actual number of parents selected because there will be variation between families in the character under selection and consequently in the probability of selection. Expressions are developed for the magnitude of the effect, which will be greater the more intense the selection and the higher the heritability of the selected character. The inbreeding due to outstanding individuals may rise for several generations after their use.

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Copyright

References

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Crow, J. F. (1954). Breeding Structure of Populations. II: Effective Population Number in Statistics and Biology. Iowa State College Press. pp. 543556.
Crow, J. F. & Morton, N. E. (1955). Measurement of gene frequency drift in small populations. Evolution, 9, 202214.
Falconer, D. S. (1960). Introduction to Quantitative Genetics. Oliver & Boyd, Edinburgh.
Lush, J. L. (1947). Family merit and individual merit as bases for selection. Amer. Nat. 81, 241261, 362–379.
Morley, F. H. W. (1954). Selection for economic characters in Australian Merino sheep. IV: The effect of inbreeding. Aust. J. agric. Res. 5, 305316.

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