(A) PCR products of P1 - P5 primers. (B) Nucleotide mutations at locus 327 and locus 1803 in sheep TAC3 gene. (C) Electrophoresis analysis of RFLP products of primer P1 and P3. P1: Bands 1, 2, 3 and 4 were CC genotype; Bands 5 and 6 were CT genotype; Band 7 was TT genotype; M: DNA Marker 2000. P3: Bands 1 and 6 were AA genotype; Bands 2, 3, 5,7 and 8 were GG genotype; Bands 4 and 9 were AG genotype; M: DNA Marker 2000.