Genealogical process on a correlated fitness landscape.

摘要: We study with extensive numerical simulation the genealogical process of 2N haploid genetic sequences. The sequences are under selective pressure, and fitness values assigned at random, but a tunable degree correlation to closely related genealogies that we observe can be classified into three different categories, corresponding regimes mutation rate. At low rates, remain localized around small number central sequences, which leads trees short pairwise distances slow turnover most recent common ancestor population. high similar (but not identical) those neutral evolution. In this regime, population drifts rapidly, selection does influence distribution in third for intermediate is only found strongly correlated landscapes. It resembles one rates nevertheless still shapes values.