Analysis of Horse Myostatin Gene and Identification of Single Nucleotide Polymorphisms in Breeds of Different Morphological Types

Table 4

Minor allele frequency (MAF), observed and expected heterozygosity (Het*), and haplotype (Hap^§) frequencies of the two promoter SNPs of the MSTN gene in horses with different morphological types.

Types^#	Number of horses	MAF g.26C	MAF g.156C	Observed Het (s.d.)^x	Expected Het (s.d.)^x	Hap [T:T]	Hap [T:C]	Hap [C:T]
B	107	0.11	0.21	0.24 (0.09)	0.26 (0.10)	0.69	0.22	0.09
M	131	0.02	0.22	0.18 (0.20)	0.19 (0.22)	0.76	0.22	0.02
M-D	80	0.04	0.07	0.11 (0.03)	0.11 (0.03)	0.89	0.08	0.03
D	78	0.01	0.01	0.02 (0.01)	0.02 (0.01)	0.98	0.01	0.01
Total	396	0.05	0.15	0.15 (0.09)	0.17 (0.11)	0.81	0.15	0.04

∗Means for the two loci and standard deviation, in parenthesis. xHaplotypes for the g.26T>C and g.156T>C polymorphisms. # Types: B= brachimorphic or heavy, M= mesomorphic, M-D= meso-dolichomorphic, D= dolichomorphic or light.