Liberman U, Feldman M W
J Math Biol. 1985;22(1):31-60.
A two locus deterministic population genetic model is analysed. One locus is under viability selection, the other under fertility selection with both forms of selection completely symmetric. It is shown that linkage equilibrium may occur at two different equilibrium points. For a two-locus polymorphism to be stable, it is necessary that the viability locus be overdominant but not necessary that the fertility locus, considered separately, be able to support a stable polymorphism. The overlaps in stability are not as complex as under two locus symmetric fertilities, but considerably more complex than with symmetric viabilities. Extensions of the analysis for the central linkage equilibrium point with multiple viability and fertility loci are indicated.
分析了一个双位点确定性群体遗传模型。一个位点处于生存力选择之下，另一个位点处于繁殖力选择之下，两种选择形式完全对称。结果表明，连锁平衡可能在两个不同的平衡点出现。对于双位点多态性要稳定，生存力位点必须是超显性的，但单独考虑繁殖力位点时，不一定能够支持稳定的多态性。稳定性的重叠情况不像双位点对称繁殖力情况下那么复杂，但比对称生存力情况下要复杂得多。指出了对具有多个生存力和繁殖力位点的中心连锁平衡点的分析扩展。
