"Your genes are responsible for X" is ambiguous because that statement may or may not imply a certain amount of directness. My genes are responsible for the fact that I have a driver's license, in the sense that if I had the genes of a wombat, I wouldn't have a driver's license, but that's not what most people would mean by that.
This thread is for asking any questions that might seem obvious, tangential, silly or what-have-you. Don't be shy, everyone has holes in their knowledge, though the fewer and the smaller we can make them, the better.
Please be respectful of other people's admitting ignorance and don't mock them for it, as they're doing a noble thing.
To any future monthly posters of SQ threads, please remember to add the "stupid_questions" tag.