Sorry, i am not anthropomorphising.
I am trying to say something much deeper, and much more scientific.
But we do not have those sciences yet, so we do not have words for what i am trying to convey.
DNA is DNA.
We have visitors from other planets here on earth.
Some of the mushrooms exist in a network that spans different solar systems.
And they have the same DNA structure.
(see Terrance McKenna and his discussion with Psilocybin)
DNA produces a certain set of characteristics.
This follows from the underlying code / structure / laws of the galaxy.
(i do not know if other galaxies have the same laws)
RE: How Different Will Aliens Be?