"The Poleepkwa Phenotype Paradox"

**This is a response to a question that was raised a short while ago. Thomas, if you want to discuss this in greater depth, email me at spacekricket@aol.com.
Our species is hermaphroditic, for those of you who may or may not know that. To clarify any questions that may arise from ignorance, I will briefly outline the birth process. We possess both 'male' and 'female' sexual organs, fertilise our own eggs with sperm, and carry the egg within our bodies until it is laid. After that, it must develop more outside the parent's body; soon it hatches into a child.
The entire process is pretty simple, in my opinion, and much easier and efficient from organisms that have only one gender. Poleepkwa can reproduce on their own without a mate, which increases the chances of the survival as a species. An individual can create an entire population; a single human would not be able to reproduce on their own. At the same time, this may be the ultimate genetic flaw in our species. Every child is essentially a clone of the parent, save for the times in which recessive genes--if they exist for poleepkwa--are brought to the surface and manifest. This explains how we all tend to look similar, excepting plating color and the presence of spikes or markings. We are all genetically alike, to the extent that (according to evolution) if our environment changed drastically or a disease that affected those of a specific gene sequence came up, we would not be able to adapt as quickly as organisms that reproduce sexually.
(On a side note, this may be the cause of our biological 'caste' system: a genetic mutation may have caused a poleepkwa to lay an egg that hatched into a poleepkwa of a different phenotype. Over time these developed through the generations into the different 'classes'. Keep in mind that I'm guessing on this, please. I'd rather not be 'flamed' or 'trolled'.)
Hypothetically then, if such a situation was to arise, would we survive? Unless we all began to mutate and produce offspring that carried the same mutation, it's unlikely. Evolution, according to Darwin, can take millions of years and countless generations. Perhaps we could speed up the process by removing sperm and eggs from two different poleepkwa and swapping them, but this would most likely be extremely painful and dangerous and therefore SHOULD NOT be attempted by anyone, professionals or amateurs alike. Seriously guys, don't try it. It's stupid to endanger anyone like that.
In conclusion: our method of reproduction allows for a population to be established quickly in a given environment, but it may or may not survive if said environment changed quickly.