The nucleotide sequence, variation and gene-structure of the American mink (Neovison vison) growth hormone gene was analyzed. For this purpose set of 3 amplicons were sequenced, including 5’-UTR and all exons and introns. The study involved 389 animals. The sequencing results revealed the presence of 5 exons (10 bp, 161 bp, 117 bp, 162 bp, 201 bp) and 4 introns (245 bp, 171 bp, 176 bp, 290 bp), with a total length of 1745 bp. Fourteen polymorphic variable sites were identified: 12 SNP substitutions, one single nucleotide deletion and one ins/del polymorphism. The assessment of informativeness and conclusiveness of the identified variable sitesshows that the highest ability to differentiate the American mink growth hormone gene genotypes has tri-allelic polymorphism g.1219C>G (PIC = 0.3039), and three di-allelic polymorphisms - g.616G>C, g.846A>G and g.931C>T (PIC>0.2400). The recognized SNPs enrich the database of single nucleotide polymorphisms for American mink.
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