[RAT Patrol]

By analogy think about the disease cystic fibrosis. Most of these people don't live to an age when they can reproduce - yet children with cystic fibrosis are still born at a pretty constant rate. Basically, when you have enough carriers, and a reasonable amount of random mating, these genes will continue to circulate in the population,p>I didn't mean to ignore this, but I want to research it more. In the meantime....let me point out that your example is a disorder. Give me a trait that is not a disorder that follows this pattern.

[realpatriot71]

Give me a trait that is not a disorder that follows this pattern.

Well, I think homosexuality is a disorder or sorts, but I'll see what I can find.