The Speed Gene

The Equinome scientists have discovered that the genetic sequencing at a particular point of the myostatin gene is the principal factor in determining optimal distance for an individual racing thoroughbred.  It works like this.  There are two different variations of the myostatin gene at that particular point – C for speed and T for stamina.  As an individual carries two copies of each genetic sequence, there are 3 possible genetic possibilities (CC, CT, or TT) with each of these genetic combinations having an optimum racing distance.  CC would be a speedy, sprint type (best suited to distance s of 5 furlongs to a mile), CT would be a fast middle-distance type individual (performing well over 7 as a juvenile, but training on to 12 furlongs at three and beyond) and TT would indicate a staying type (10 furlongs and beyond).