We performed PCR amplification and sequence to TSPY and DBY partial sequence in the yak Y chromosome, and performed sequence variation and phylogeny analysis to the bovinae.
我们对牦牛Y染色体上的TSPY及DBY部分序列进行了扩增测序,并对牛亚科动物进行了序列变异和系统发育分析。
参考来源 - 牦牛的起源与系统发育分析Nucleotide sequence variation is an inevitable result of biological evolution and the adaptation to the environment. Allelic variation can potentially alter protein function if it occurs in the coding region.
基因组序列变异是各种生物进化和适应环境的必然结果。
参考来源 - 等位基因功能差异的统计遗传学分析方法及其应用·2,447,543篇论文数据，部分数据来源于NoteExpress
Objective To study sequence variation of V3 loop of HIV-1 strains prevalent in China.
目的研究中国艾滋病病毒1型（HIV-1）毒株V3环序列的变异性。
Sequence variation was screened by means of PCR single stranded conformation polymorphism (SSCP) and DNA sequencing.
用PCR -单链构象多态性(SSCP)和DNA序列分析方法确定扩增序列突变情况。
But it's hard to tell in most natural populations whether inheritance is due to DNA sequence variation or epigenetic changes.
但在自然界大多数种群中，很难判断遗传是否源于DNA序列改变或者表观基因变异。
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