(A-C). Δ K (-○-) and the mean log P ( X | K ) (-□-) based on the 5 replicate STRUCTURE runs indicate that K = 2 is optimal for each dataset. The highest point on the blue line depicts the optimal K value. The red line depcits the mean log P(X|K) (-□-) for each K value. (A) All eight breeds included, (B) Only Bos taurus and (C) Bos taurus without Japanese Black.