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Table 1 Sample size (N), genotypes and frequencies of the E, e and eaalleles of the Extension gene and Hardy-Weinberg Equilibrium (HWE) test results for the Pottoka and Jaca Navarra ponies and for the Euskal Herriko Mendiko Zaldia (EHMZ) and Burguete heavy-horse breeds.

From: Identification of horse chestnut coat color genotype using SNaPshot®

Breed Pottoka Jaca Navarra EHMZ Burguete
N 125 56 24 44
Genotypes     
E/E 86 20 2 4
E/e 38 34 11 17
E/e a 1 2 4 0
e/e 0 0 7 18
e/e a 0 0 0 4
ea/ea 0 0 0 1
Allele frequencies     
E 0.844 ± 0.023 0.679 ± 0.044 0.396 ± 0.071 0.284 ± 0.048
e 0.152 ± 0.023 0.304 ± 0.043 0.521 ± 0.072 0.648 ± 0.051
e a 0.004 ± 0.004 0.018 ± 0.013 0.083 ± 0.040 0.068 ± 0.027
HWE p value 0.1347 ± 0.0004 0.0007 ± 0.0000 0.0739 ± 0.0002 0.1604 ± 0.0002