Science has measured humans to have 20,000 genes. Some onions have 40,000. The idea of better or worse "gene pools" is a myth. True for our skin or hair color at birth, but not at all towards our potential in life. Another "gene" controls that - it's called epigenetics. A fancy word that says, we are the ultimate adaptation machine. We respond to our environment, and most specifically, to stress. The great thing about epigenetics is that we're all born with it. We just need to get after it.