looking at pyramids and reminded me of the Y thing.

If you look from above:

A 3 side pyramid is a Y

A 4 side pyramid is an X

There are lots of X and Y references everywhere.

Also, it's related to dna.

Don't think there is meaning there, but I wouldn't be surprised if it's done on purpose as a symbol. Maybe to show symbiosis between different facets of their world? ie, NK=Y Rockets=X