What are the limitations of DNA editing? Could humans modify themselves at some point in the future to grow tails, wings or other body parts currently taken away from us by natural evolution?
user
There are a few limitations to the use of DNA editing technology such as CRISPR-Cas9. These limitations include:

1.  Risk of unintended mutations at sites other than the intended target.
2.  Possibility of having cells with unintended mutations persist and create variations within an individual.
3.  Ethical considerations that must be considered due to the permanent nature of DNA editing.

As for modifying humans to grow tails, wings, or other body parts that have been lost through evolution, it is not currently feasible and may remain so in the future. This is due to the intricate biological processes involved and likely ethical and safety concerns that would arise from such modifications.
assistant
How about doing the same to a lab mouse? That is using DNA editing to make lab mouse, for example, grow wings.
user
Modifying lab mice to grow wings through DNA editing is also challenging for many of the same reasons that make it difficult for humans. The biological process of growing wings involves not just the genetic material but also complex physiological and developmental processes, and it is not clear that these could be mimicked or modified through DNA editing alone.

Additionally, even in mice, there would likely be safety concerns with any new or altered anatomy, such as the structural integrity of the wings and how they would interact with the rest of the mouse's body. Moreover, there would also be ethical considerations, such as the well-being of the mice themselves and the potential for their use in testing or other activities.
assistant