explain gtp genetics to a ball python person

[hypersomniacjoo]

They are nothing like bp. if you breed blue to blue you can get green. they aren't inheritable by simple Mendelian genetics.

And not all genetics is simple codom, dom, and recessive. There are a number of traits that don't act like this.

THIS ^^^^ is what i was trying to ask about. are gtp genes just completely random or is there some order to them, perhaps a different method of organization (not Mendelian) ?