How did multi-celled animals evolve?

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jonperry
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How did multi-celled animals evolve?

Post by jonperry » Thu Dec 22, 2016 3:31 pm

At the debate several years back, Steve asked how multi-celled organisms could have evolved. I gave a quick answer there on the spot but recently got around to doing a proper animation on the subject. Here it is:

https://www.youtube.com/watch?v=VUfNEHl44hc

In the video description on YouTube you can find links to all the experiments.

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Paidion
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Re: How did multi-celled animals evolve?

Post by Paidion » Thu Dec 22, 2016 8:44 pm

Perhaps a more challenging question is, "What is the origin of the first forms of life—supposedly single-cell organisms? Did they simply appear out of nowhere? Or were they brought here by ancient visitors from other planets or systems or galaxies? The latter doesn't really explain anything; it just moves the problem a step backwards.
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jonperry
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Re: How did multi-celled animals evolve?

Post by jonperry » Fri Dec 23, 2016 7:54 pm

Current thinking is that the first life forms would have been free living genes made of RNA or something similar to it.

I have a video explaining why that idea is most probable given our current understanding of life and chemistry right here: https://youtu.be/K1xnYFCZ9Yg

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