Equine marker genes. Polymorphism for transferrin alleles, TfF1 and TfF2, in Thoroughbreds

Abstract
The equine transferrin F variant is distinguishable into 2 types, F1 and F2, on alkaline polyacrylamide gel electrophoresis. Gene frequencies in 63 related thoroughbreds are 0.39 and 0.19 for TfFa and tfF2, respectively. The frequencies for these 2 alleles in 375 related standardbreds is 0.00 and 0.59, respectively.