A series of simulation studies on population behaviour under long-term selection were reviewed. Population genetic behaviour in population means, variance and distributions, heritabilities, effect of each allel and effect difference of two allels in a locus, major loci and general loci effects, selection differential and selection response, symmetry of accumlative response in opposite direction and interaction among different kinds of genes was described and discussed. In most of cases these seemed to be in acordance with results of the long-term selection experiments on Drosophila, mice and form animals. It would be suggested that further study must be put on a deeper understanding of biochemistry and physiology of the selected trait.

Z. H Jiang, Z. Z Xia, J. Li, Y. Q Niu, N. C Huang, X. Z Liu

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume XIII. Plenary lectures, molecular genetics and mapping, selection, prediction and estimation., , 306–309, 1990
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