I don't know a lot about science, gnomes, DNA and all the stuff ya'll have been talking about.
Then you have no right what so ever on the validity of the statments science makes. You actually have to know what you are talking about before you can start to critize.
I can't prove it no more than anyone can absolutely without a doubt prove creation and/or evolution.
This depends on what you mean by all of "prove", "without a doubt" and both "creation" and "evolution".
It is entirly possible to demonstrate that a YEC creation scenario is false (or you have to believe in a God as prankster). That is easier than proving something 'absolutely true'. That, by itself, doesn't prove any alternative true, of course.
See the "evolution as fact and theory" thread to understand that evolution as "fact" is provable beyond any reasonable doubt. The "how" part is less "provable" but is clearly correct beyond any reasonable doubt also.
Being able to prove or disprove either or a degree in genetics, astronomy, etc isn't a prerequisite to believing in God and his handywork.
But, He did give us a mind to use and free will. We have the right and obligation to question things and not fall for the latest fad that comes along.
Believing in God (of some types) is not an issue of science. So you are right it isn't something that genetics or astronomy disproves or proves.
He did give us a mind and a lot of evidence for us to figure out how he did things. The current scientific consensus in biology, geology and physics is in no way a "fad". Only a deep ignorance could possible lead someone to think that for a minute.