Is Evolution Responsible for Girls not farting?

I do believe it's hereditary but I'm not sure how far it goes back. I would say it has to do with a mutation in a gene or genes on the sixth chromosome. So, I guess what I'm saying is that it is a more recent phenomena. Now what I really don't understand is the evident single minded thinking that men do. They just aren't able to think of more than one thing at a time. Well, maybe a select few but most men's thought process leads them into a chain of events. Possibly this is why there are so many divorces. Ah, go figure.