chapter 7 Univariate drift for 400 generations


Figure 7.0b Genetic drift causes the phenotypic trait mean of a lineage to undergo a random walk, showing the effect of genetic variance. Same conventions and parameters as in Fig. 7.0a, but these animation runs contrast diversification when additive genetic variance is typical (0.4) and extraordinarily high (0.99). Here as in Fig. 7.0a, within-population phenotypic variance is 1 (P=1), so heritability is equivalent to additive genetic variance (G).