Pedigree Query

"A horse can be an X factor horse, and not be a great racehorse." As I read about this topic in the Thoroughbred Times, I believe the current data is that it is not enough to possess the LHX. However the evidence is that it helps those that are big for their age.I think it was a report from EQB,but ...

I have read all the posts with interest. This is a fun portion of pedigree research. My question is this: how can you tell if your horse has the LHX and how do you tell from whom it came? And is there a test to find out whether or not any horse actually has the LHX? I have heard that the way to quic...