Department of Biology, G7, University of Pennsylvania, Philadelphia, Pennsylvania, 19174.
Genetics. 1977 Nov;87(3):569-79. doi: 10.1093/genetics/87.3.569.
The effect of a stochastic environment on an additive, two-locus model of a diploid population is examined. The appropriate diffusion equation is derived and its asymptotic properties are approximated by an Orstein-Uhlenbeck process. The first and second order moments of this approximating process are given. The mean linkage disequilibrium will be nonzero if the alleles at the different loci are correlated. The sign of the mean disequilibrium is determined by the sign of the correlation.
考察了随机环境对二倍体群体的加性双位点模型的影响。推导出了相应的扩散方程,并通过 Orstein-Uhlenbeck 过程对其渐近性质进行了近似。给出了该近似过程的一阶和二阶矩。如果不同位点的等位基因相关,则连锁不平衡的均值将不为零。平均不平衡的符号由相关的符号决定。