Subject: How and when did eukaryotes evolve from colonies to groups of tissues.

    The more I learn the more questions I have. I have looked at organisms 
such as the volvox, jellyfish, and porifera and wonder how they evolved to 
where they are now. Then the next question that hits me is; how did other 
organisms evolve beyond these points? What were the processes involved in 
going from colonies up to an organism with a primitive nervous system? I know 
that much of it had to do with chance mutations. But, how did they go from a 
group of microorganisms living symbioticaly to a much more complex group of 
tissues that share DNA and begin from the same stem cells that later 
differentiate into specialized cells? I have gone through my books and the 
internet but have not found where anyone else has asked or answered this 
question.

Re: How and when did eukaryotes evolve from colonies to groups of tissues.