In debate one is called upon to support on positive claims. Therefore, the burden of proof lies on the shoulders of those who claim a god does exist.

Your statement uses subjective, not objective logic. What you yourself would do cannot be project onto a deity. You could use the "Well that's what I would do" line of logic to prove literally anything is true. Therefore, it proves nothing.

I have no solid science to back this up, although I would not be surprised if someone has done a study on this. I was adopted at birth. I met my biological father for the first time at age 16. As a relative measure of intelligence, I have scored 140 on the IQ test. Specifically, I scored 160 on Verbal. My biological father scored 150 Verbal and 141 overall. My adoptive mother (the person who raised me) scored 100 verbal and 120 overall. This case points strongly towards intelligence being genetic.