Maximum likelihood support and likelihood ratio tests for gene flow under models of speciation.

The log-likelihoods are displayed for isolation (Iso), isolation-with-migration (IM), and isolation-with-initial-migration (IIM) models. The estimates in bold correspond to the maximum likelihoods for each genomic region. In each case, the IIM model has the best support. The columns labeled Iso and IM show the likelihood ratio test statistics for each model relative to the IIM model.