The relationship of transition and transversion of base change in 4-fold degenerate sites of coding genes of 6 proteins, which showed 70% homology in wmposition investigated.
以同源性在70%以上的6组同源蛋白为材料，从系统发生的角度研究发生在四倍简并位点上的转换和颠换的关系。
The results show that the types of DNA base mutation included the transition, the transversion and the deletion.
结果显示：碱基变异的类型包括转换、颠换和缺失。
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