I think this is still science fiction. About ten years ago a lot of the focus was on DNA-centric self-replicating structures but it didn’t go anywhere interesti

I think this is still science fiction. About ten years ago a lot of the focus was on DNA-centric self-replicating structures but it didn’t go anywhere interesting. More recent attempts (example: https://news.wsu.edu/2018/03/08/self-replicating-materials-2/ https://news.wsu.edu/2018/03/08/self-replicating-materials-2...) are still very much early stage, focusing on exploratory fundamental research.