Introduction: The identification and characterization of the complex regulatory mechanism system for determining the cell fate is particularly critical to the identification and characterization of the mitochondrial DNA genetic polymorphisms of cross-type cells. Materials and methods: The aim of this study was to explain the process of MtDNA DNA polymorphism in marine animal and its mechanism. Result: Each time the germ cells are formed, the polymorphism of mitochondrial DNA in the South China Sea Marine animals is edited, that is, the original...