用MEGA软件按断点分段做基因进化树分析以验证该断点的正确性；
To confirm the breakpoints, separate phylogenetic analysis according to the breakpoints was performed with MEGA software.
进化树分析表明，鸡MTHFR氨基酸序列与绿头鸭和鸿雁的关系较近。
The phylogenetic tree analysis indicated the broiler MTHFR was closely related to mallard and swan goose.
进化树分析显示S21蛋白可在一定程度上反映生物的进化及遗传变异趋势。
The phylogenetic tree drawn by ClustalW and Phylip software indicated that the relationship of S21 from different species corresponded to the evolutionary trend of ribosomal.
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