A self defeating argument..
Consider: Bill Nye stated that without sex our genes wouldn't last very long at all. So before gender and sex supposedly evolved, the genes wouldn't have had procreation to evolve those differences.
Alternatively, if there was a different mechanism at work to pass along genes, why would it have changed to such an inefficient means?
Finally, all this still assumes small changes that lead to big differences and the origin of genes which has not been proven.
Maybe we should stop equivocating terms such as evolution.