The inheritance of heart score in racehorses.
D000818:Animals; D004562:Electrocardiography; D004777:Environment; D005260:Female; D008040:Genetic Linkage; D014644:Genetic Variation; D006321:Heart / Q000502:physiology*; D006736:Horses / Q000235:genetics*; D008297:Male; D012641:Selection, Genetic; D012737:Sex Factors; D014960:X Chromosome