system
Given the following post, respond as if you're commenting on Reddit:
human
What is the most genetically diverse species? Or I should would word it, “what species has the most phenotypic variability yet can still interbreed to be considered a ‘species’? “

This is roughly phrased and rather generic parameters but you get what I mean...
gpt
Apparently a nematode worm called Caenorhabditis brenneri is the most genetically diverse that we know of. The DNA between individuals can be up to 14% different. In comparison humans and mice have about 15% variation.