28 May '13 06:16>
Originally posted by KellyJayIn my first post I pointed out that there are two aspects to this:
So during these changes at the on set there would have been an asexual creature under going changes
didn't require two sexes to procreate, while it could still produce off spring
the old way it was getting itself ready through random mutations to be able
to split into two sexes.
1. Sexual reproduction whereby two cells get together and combine their DNA, see
https://en.wikipedia.org/wiki/Meiosis
This takes place even in many single celled creatures.
2. Sexual dimorphism. It must be noted that a large percentage of species have sexual reproduction without sexual dimorphism. Most plants and many animals, especially sea creatures are neither male nor female.
You appear to be incorrectly assuming that sexual reproduction requires sexual dimorphism and that the various sexual strategies arose at the same time as sexual reproduction. This is not the case at all. Sexual reproduction predates all higher life forms, the various sexual strategies arose over time.