Well, I'm not surprised you don't answer my query.
Are you sure all DNA codes are the same. ..and did that code 'create' itself?
Pardon the intrusion, but:
1) With regard to your question, it's irrelevant whether all DNA codes are the same (i.e., follow the same set of rules). It only matters whether human and lobster genetic codes are the same. They are. If you'd rather insert a different creature, feel free to go right ahead.
2) Whether or not the code 'created' itself has no bearing on whether it's a common feature. If, by example, an intelligent designer 'created' the code, then all evidence supports that both lobsters and humans descended from the code that the intelligent designer created.
Evolution does not preclude such fantasies.