A Sequence Polymorphism In MSTN Predicts Sprinting Ability And Racing Stamina In Thoroughbred Horses: This study describes the discovery of myostatin as the Speed Gene and the development of the Equinome Speed Gene Test. Myostatin, a negative regulator of muscle mass has been found to be highly predictive of aptitude for best race distance in the horse.
Hill EW, Gu J, Eivers SS, Fonseca RG, McGivney BA, Govindarajan P, Orr N, Katz LM, MacHugh DE. PLoS One. 2010 Jan 20;5(1):e8645.
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