Nagylaki Thomas, Lou Yuan
Department of Ecology and Evolution, The University of Chicago, 1101 East 57th Street, IL 60637, USA.
Theor Popul Biol. 2006 Mar;69(2):217-29. doi: 10.1016/j.tpb.2005.09.003. Epub 2005 Dec 15.
The existence and stability of an internal (i.e., completely polymorphic) equilibrium for viability selection at a single multiallelic locus is investigated. Generations are discrete and nonoverlapping; the population is panmictic, monoecious, and diploid. Various necessary and sufficient conditions for the existence of an internal equilibrium are established and applied to the loss of alleles. Some necessary conditions for the existence of an asymptotically stable internal equilibrium are also established. All these conditions are simpler and yield general biological conclusions more easily than the classical necessary and sufficient conditions.
研究了单个多等位基因座上生存力选择的内部（即完全多态）平衡的存在性和稳定性。世代是离散且不重叠的；种群是随机交配、雌雄同体且二倍体的。建立了内部平衡存在的各种充分必要条件，并将其应用于等位基因的丢失。还建立了渐近稳定内部平衡存在的一些必要条件。所有这些条件都比经典的充分必要条件更简单，更容易得出一般的生物学结论。
