Fig 2. RAG1/ RAG2 chronogram using calibration from [34]. Labeling follows Fig 1 with the addition that tetraploid homeologs are indicated with α and β and, for octoploid and dodecaploids, each of these homeologs classes is further divided into two or three categories indicated by numbers. Homeologs of new and resurrected species are in red. Letters in circles indicate homeologous lineages inferred to be descended from six tetraploid ancestral species A–F. Data are lacking from X. petersii, X. poweri, and X. victorianus, which form a clade with X. laevis, and from X. fraseri.
Image published in: Evans BJ et al. (2015)
© 2015 Evans et al. This image is reproduced with permission of the journal and the copyright holder. This is an open-access article distributed under the terms of the Creative Commons Attribution license
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