Spacekiwi wrote:What is most interesting about gay relationships though, is that even though they may have no progeny, it is still noted that in many species, from bonobos as noted in the latest national geographic, to sheep and birds. Wikipedia notes that it has been well documented in over 500 pecies, and found in around 1500 + species, and is thought to be common to near every species in the animal kingdom. So something is keeping the genetic portion that predisposes towards homosexual, bisexual behaivour etc around.
One obvious survival advantage to having gay relationships is that, when resources are scarce, not having kids to compete with your siblings' kids gives your shared genes an advantage over another tribe that ends up starving themselves out...