所克隆的奶山羊blg基因调控区与山羊blg伪基因显著不同，其同源性仅为83 %(上游调控区)和88%(下游调控区)。

The dairy goat gene differed significantly from goat BLG pseudo gene with a homology of only 83% (upstream region) and 88% (downstream region), respectively.

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因此选择对基因的表达具有重要功能的外显子1和其上游的调控区及下游外显子内含子交界区序列通过直接测序法进行SNP筛查，并进一步分析多态位点与病窦的关联性。

Therefore the other aim of our study is to discover SNPs of HCN4 exon 1, including the regulatory sequence and exon-intron boundary of it, which plays an importable role of channel function.

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