However , since they are slightly different that the normal bases after they are incorporated into the DNA , the DNA production is halted and the cell dies .
This means that these molecules are structurally similar enough the basic components of DNA that they can be substituted in .
Since they are slightly different that the normal bases after they are incorporated into the DNA , the DNA production is halted and the cell dies .
This means that these molecules are structurally similar enough the basic components of DNA that they can be substituted in .