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Regression tree of the probability of being a domestic mink for free-ranging American mink (Neovison vison) sampled in Ontario, Canada. Node and group numbers are to clarify discussion in the text only. Values at branch tips are the probability of being domestic (as determined in genetic assignment program Structure using K = 2 groups) and number of samples (in parentheses). Latitude is decimal degrees and farm density is mink farms/km2.
