system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] Does Superman have DNA?
gpt
Yeah, DNA of alien species, including Kryptonians, has been mentioned several times in the comics.  Notably when attempts to clone Superman were made.

**EDIT:** Plus Supes and Lois currently have a son which was conceived naturally (albeit while Superman's powers were suppressed), so Kryptonians have to be genetically fairly similar to humans.