system
Given the following post, respond as if you're commenting on Reddit:
human
[40K] What is with human DNA?

We can breed with the Elder, have DNA inserts from the Necrons (AKA the blank/Pariah gene) and have the capacity for great psychic powers. So how is this all linked were we the Old ones or just an oddball species with really adaptable DNA?
gpt
Well, the breeding with Eldar probably has less to do with Humans, and more to do with the Eldar. The Eldar genome is psychomorphic, shifting under even subconscious mentall pressures. It's possible that their DNA adapted to suit humans, rather than being inately compatible. (Even then, it is by far he stupedest thing Goto has written, and totally unsupported by every other source. Ever.).

Other than that... There's not much particularly strange. A bit of a tendency towards more rapid environmental adaptation, as seen in the Abhuman populations, but nothing particularly strange. Low key psychic aptitude isn't that uncommon in the Galaxy, and Pariah's are a genetic anomaly.