Yak

Y-STR INRA189 polymorphisms in Chinese yak breeds

Z. J. Ma, Chen, S. M., Sun, Y. G., Xi, Y. L., Li, R. Z., Xu, J. T., and Lei, C. Z., Y-STR INRA189 polymorphisms in Chinese yak breeds, vol. 14, pp. 18859-18862, 2015.

To further explore Y-STR INRA189 polymorphisms in the yak, and to determine the genetic differences among yak breeds, genotyping analysis of INRA189 in 102 male yak individuals from three yak breeds in Qinghai Province of China was performed. Genotyping revealed the presence of four alleles, with sizes of 149, 155, 157, and 159 bp, respectively. Of these, the 157-bp allele, which was found with the highest frequency in the three yak breeds, was the dominant allele.

Duplication polymorphisms in exon 4 of κ-casein gene in yak breeds/populations

S. Pingcuo, Gao, J., Jiang, Z. R., Jin, S. Y., Fu, C. Y., Liu, X., Huang, L., and Zheng, Y. C., Duplication polymorphisms in exon 4 of κ-casein gene in yak breeds/populations, vol. 14, pp. 10242-10248, 2015.

The objective of this study was to compare 12 bp-duplication polymorphisms in exon 4 of the κ-casein gene among 3 breeds/populations of yak (Bos grunniens). Genomic DNA was extracted from yak blood or muscle samples (N = 211) and a partial sequence of exon 4 of κ-casein gene was amplified by polymerase chain reaction. A polyacrylamide gel electrophoresis assay of the products (169 bp) revealed 2 variants. These variants differed in a 12-bp duplication of the nucleotide sequence corresponding to amino acids 147-150 (Glu-Ala-Ser-Pro) or 148-151 (Ala-Ser-Pro-Glu).

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