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Author Topic:   Single Celled to Multiple Cellular evolution
Dr Jack
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Posts: 3514
From: Immigrant in the land of Deutsch
Joined: 07-14-2003


Message 4 of 10 (508485)
05-14-2009 7:31 AM
Reply to: Message 1 by ramoss
05-13-2009 6:46 PM


Plants and Animals evolved multicellularity separately (as did red, green and brown algae, certain bacteria and fungi).
The evidence that multicellular organisms evolved from singlecelled organisms comes from multiple similarities of genetics and biochemistry between them.
As for the spinal column, evidence comes both from extant variations on the notocord, some fossils (such as Pikaia - the first known chordate) and the development of embryos.
Edited by Mr Jack, : Markup fix.

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