Fig. 4: Change in π-based male and female effective population sizes over time under the two transitions scenario. | Nature Communications

Fig. 4: Change in π-based male and female effective population sizes over time under the two transitions scenario.

From: Patrilineal segmentary systems provide a peaceful explanation for the post-Neolithic Y-chromosome bottleneck

Fig. 4

Between t0 and t1, the descent rule is bilateral, and the residence rule is either patrilocal, matrilocal, or multilocal. Then, at t1, there is a transition to patrilineal descent with patrilocal residence (with the settings of scenario 2g, i.e. lineal fission, variance in reproductive success between groups, no violence, and with the parameter values given in the legend of Fig. 2). π-based male effective population size (a), female effective population size (b) and female-to-male effective population size ratios (c) averaged over 200 replicates are shown every 20 generations with the 95% confidence interval. Values of means and their 95% confidence intervals are provided in the Source Data file.

Back to article page