Why, just like the code for the computer programs you're using - it magically appeared abiogenetically out of nowhere, due to completely naturalistic forces!
/sarc
Just like the universe popping out of nowhere, for no reason, expanding faster than the speed of light to fill all known space in a trillion-trillionth of a second, organizing itself into complex structures, and establishing it’s own laws?
How silly of me.
Of course we should then expect incredibly complex genetic code to assemble itself.
Why not?