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In order to study genetic variation of tyrosinase gene in four different flesh color chicken breeds selected from special districts including Guyuan, Wenchang, Tibetan and Hisex chicken, five loci of the TYR gene exon-1 and one locus of 5′ flanking region were analyzed in PCR-SSCP and DNA sequencing. The results indicated that there were polymorphisms only at TYR1 and TYR3 locus. At TYR1 locus located...
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