Summary
Three new approximations are suggested for the standardized selection intensity, i. Two are simple functions of powers of b, the fraction selected. These improve on previous approximations by covering a broader range of selection intensities. A third approximation is developed using a rational polynomial. This gave accurate approximation, but simplicity was lost.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Beasley JD, Springer SG (1977) Algorithm AS 111: The percentage points of the normal distribution. Appl Stat 26:118–121
Becker WA (1984) Manual of quantitative genetics, 4 th edn. Academic Enterprises, Pullman/WA
Burrows PM (1972) Expected selection differentials for directional selection. Biometrics 28:1091–1100
Falconer DS (1965) The inheritance of liability to certain diseases, estimated from the incidence among relatives. Ann Human Genet 29:51–76
Moshier SL (1986) Computer approximations. Byte 11:161–178
Simmonds NW (1977) Approximations for i, intensity of selection. Heredity 38:413–414
Smith C (1969) Optimum selection procedures in animal breeding. Anim Prod 11:433–442
Author information
Authors and Affiliations
Additional information
Communicated by E. J. Eisen
Approved for publication by the Director of the Louisiana Agricultural Experiment Station as manuscript no. 87-19-10038.
Rights and permissions
About this article
Cite this article
Saxton, A.M. Further approximations for selection intensity. Theoret. Appl. Genetics 76, 465–466 (1988). https://doi.org/10.1007/BF00265351
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00265351