Millions of dollars and countless hours are spent on talent identification , but it 's an unpredictable science . Scientists discover `` speed gene '' within horse DNA which governs physical ability . Test allows trainers to learn what sort of runner their horse will develop into . Comment: Results of the test are already being published by Australian blood stockist OTI Racing .
Scientists discover `` speed gene '' within horse DNA which governs physical ability . Test allows trainers to learn what sort of runner their horse will develop into . Comment: Results of the test are already being published by Australian blood stockist OTI Racing .