Base-compositional heterogeneity in the RAG1 locus among didelphid marsupials: implications for phylogenetic inference and the evolution of GC content.

Abstract excerpt

Although theoretical studies have suggested that base-compositional heterogeneity can adversely affect phylogenetic reconstruction, only a few empirical examples of this phenomenon, mostly among ancient lineages (with divergence dates > 100 Mya), have been reported. In the course of our phylogenetic research on the New World marsupial family Didelphidae, we sequenced 2790 bp of the RAG1 exon from exemplar species...

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