Playing chicken (Gallus gallus): methodological inconsistencies of molecular divergence date estimates due to secondary calibration points.

Abstract excerpt

For any given taxonomic divergence event, one may find in the literature a wide range of time estimates. Many factors contribute to the variation in molecular date estimates for the same evolutionary event. High on the list is the choice of calibration points for converting genetic distances into evolutionary rates and, subsequently, into dates of divergence. In this study, we investigate one critical source of...

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