Genetic divergence and heterozygosity estimates for the elephantids.
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We calculated genetic divergences based on 549 sites that are polymorphic among the elephantids, normalizing by savanna-Asian elephant genetic divergence. Standard errors are from a Weighted Jackknife (calculated in this way, savanna-Asian genetic divergence has no uncertainty since it is used for normalization). The results show that savanna and forest elephants are sister groups (>4 standard deviations less diverged than savanna-Asian) and that Asian elephants and mammoths are also sister groups (>6 standard deviations less diverged than savanna-Asian).