I actually don’t really know how to do the math on this one. If we start out with a population that all has the normal form of gene B and we the mutant form conveys no net reproductive fitness benefit or downside and the likelihood of each mutating into the other is equal, then I suppose we would expect the frequency of each variant to approach 50% given enough time.
The relevant math would be Gambler’s ruin. If two forms have equal and independent chances of reproduction over a longer time-frame either of the forms will be wiped out.
But when it comes to the core of evolutionary theory, there isn’t even a good reason to try to do original research. There are plenty of professors in evolutionary theory that spend a lot of time investigating the issue, so unless you have good reason why the mainstream professors in evolutionary theory are wrong, it makes sense to default to the mainstream academic beliefs.
The relevant math would be Gambler’s ruin. If two forms have equal and independent chances of reproduction over a longer time-frame either of the forms will be wiped out.
But when it comes to the core of evolutionary theory, there isn’t even a good reason to try to do original research. There are plenty of professors in evolutionary theory that spend a lot of time investigating the issue, so unless you have good reason why the mainstream professors in evolutionary theory are wrong, it makes sense to default to the mainstream academic beliefs.