I'm having a little trouble picturing how this would happen and I can't find any information on this. I understand that the jump from a unicellular organism to a multicellular matrix can happen, but I'm having trouble picturing how a matrix of genetically identical cells can evolve into a breeding organism with organ systems, etc. here's my problem: - for that first multicellular organism (which would look more like a membrane of cells than an animal) to reproduce and evolve, wouldn't it need a mate/reproductive system? but in order to have a mate, the organism would have had to reproduce in the first place (that is, there would have to be more than one of these), which is impossible without having a mate... I'm guessing there is a flaw in my logic, any website/book/video that describes this in detail would be helpful.