Zabeel’s recent retirement brings the Danehill/Zabeel era to an end.  The progeny of two great sires battled it out for supremacy on Australia’s racetracks, and the results are spectacular.  Aside from both being Gr1 winners, they had at least one other thing in common.  Both were bay dominant for colour, ie all their progeny were bay (except grey foals from grey mares). For a stallion to be bay dominant is an idea that garners plenty of comment, as if being genetically homozygous for colour also means he is dominate in all other areas of genetics and therefore will produce better quality runners.  But does this idea play out in reality?

Published in Breeding & Racing in 2014.