Understanding through Discussion


Welcome! You are not logged in. [ Login ]
EvC Forum active members: 84 (8914 total)
Current session began: 
Page Loaded: 06-17-2019 9:59 AM
31 online now:
1.61803, caffeine, Coragyps, jar, JonF, Percy (Admin), Tangle (7 members, 24 visitors)
Chatting now:  Chat room empty
Newest Member: 4petdinos
Post Volume:
Total: 853,897 Year: 8,933/19,786 Month: 1,355/2,119 Week: 115/576 Day: 16/99 Hour: 1/5


Thread  Details

Email This Thread
Newer Topic | Older Topic
  
Author Topic:   Single Celled to Multiple Cellular evolution
ramoss
Member
Posts: 3110
Joined: 08-11-2004
Member Rating: 8.2


Message 1 of 10 (508466)
05-13-2009 6:46 PM


What is the evidence on how singular cell organisms evolved into multicellular
organisms? Was this before or after the plant and animal kingdoms split.
And is there surviving evidence on the evolution of the spinal column ?
Replies to this message:
 Message 3 by Dr Adequate, posted 05-14-2009 4:03 AM ramoss has responded
 Message 4 by Dr Jack, posted 05-14-2009 7:31 AM ramoss has not yet responded

  
Admin
Director
Posts: 12600
From: EvC Forum
Joined: 06-14-2002
Member Rating: 3.7


Message 2 of 10 (508468)
05-13-2009 8:41 PM


Thread moved here from the Proposed New Topics forum.
    
Dr Adequate
Member
Posts: 16095
Joined: 07-20-2006


Message 3 of 10 (508475)
05-14-2009 4:03 AM
Reply to: Message 1 by ramoss
05-13-2009 6:46 PM


We can actually watch evolution from single-celled forms to multi-celled forms happening.

Linky link.


This message is a reply to:
 Message 1 by ramoss, posted 05-13-2009 6:46 PM ramoss has responded

Replies to this message:
 Message 5 by ramoss, posted 05-14-2009 2:59 PM Dr Adequate has not yet responded

  
Dr Jack
Member (Idle past 268 days)
Posts: 3507
From: Leicester, England
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.


This message is a reply to:
 Message 1 by ramoss, posted 05-13-2009 6:46 PM ramoss has not yet responded

  
ramoss
Member
Posts: 3110
Joined: 08-11-2004
Member Rating: 8.2


Message 5 of 10 (508522)
05-14-2009 2:59 PM
Reply to: Message 3 by Dr Adequate
05-14-2009 4:03 AM


I take it the next step would be for individuals to become more specialized in a colony??
This message is a reply to:
 Message 3 by Dr Adequate, posted 05-14-2009 4:03 AM Dr Adequate has not yet responded

Replies to this message:
 Message 6 by OriginLifeandDeath, posted 05-14-2009 9:32 PM ramoss has responded
 Message 10 by straightree, posted 05-17-2009 4:20 PM ramoss has not yet responded

  
OriginLifeandDeath
Junior Member (Idle past 3589 days)
Posts: 9
Joined: 05-14-2009


Message 6 of 10 (508573)
05-14-2009 9:32 PM
Reply to: Message 5 by ramoss
05-14-2009 2:59 PM


single cell to multi cell shown as de-evolution
http://www.cafepress.com/Origin_of_Death

A mosaic book which examines the causes of life and death by cobbling various scientific investigations into an unmistakable conclusion: Charles Darwin and creationist prove to be both right and the same.
Synopsis
Life on our planet has adapted to live in the Antarctic, thermal fissures, sulfur pools, near molten lava (extremophiles), fresh and salt water, as well as Florida and other more comfortable environs. Given that life is so virile and adaptive, why does it succumb to death just because it has lived? By embracing Darwin's work, studying it and determining its limits of application, we are left with a firm understanding of evolution (origin of species). The fit is great and supported by a wealth of evidence. Darwin's theory propels a very accurate understanding of the origin of species but not the origin of life and death. Evolution provides no answers or scientific explanation for the origin of life and death. This is not because Darwin's work is unfinished but rather because evolution has no application here. One of the main arguments employed by creationists against the theory of evolution is expressed in the form of a rhetorical question, how can chance mutations (mistakes) create all the complicated life forms we see? It is a good question. The question's underlying assumption maintains that evolutionists believe that organisms, which more recently evolved, are further evolved, improved and therefore more complex than earlier creatures on the evolutionary path. Indeed, most evolutionists believe this hierarchy of complexity. But what if that very first cell was in fact more complicated than all life that followed? The answer to this question places evolution and creationism on the same track. This book reveals their co-existence with an enormity of sceintific fact. This book reveals that evolution is God's creation to serve the life he also created. Darwin actually does more to prove the existence of a creator than anyone.

Edited by Adminnemooseus, : Hide content, add banner.


This message is a reply to:
 Message 5 by ramoss, posted 05-14-2009 2:59 PM ramoss has responded

Replies to this message:
 Message 7 by ramoss, posted 05-14-2009 10:10 PM OriginLifeandDeath has responded

    
ramoss
Member
Posts: 3110
Joined: 08-11-2004
Member Rating: 8.2


Message 7 of 10 (508585)
05-14-2009 10:10 PM
Reply to: Message 6 by OriginLifeandDeath
05-14-2009 9:32 PM


Re: single cell to multi cell shown as de-evolution
This has nothing to do with what I was asking, and looks to be preaching instead of looking at the issue.

Edited by Adminnemooseus, : No reason given.


This message is a reply to:
 Message 6 by OriginLifeandDeath, posted 05-14-2009 9:32 PM OriginLifeandDeath has responded

Replies to this message:
 Message 8 by OriginLifeandDeath, posted 05-14-2009 10:16 PM ramoss has not yet responded

  
OriginLifeandDeath
Junior Member (Idle past 3589 days)
Posts: 9
Joined: 05-14-2009


Message 8 of 10 (508586)
05-14-2009 10:16 PM
Reply to: Message 7 by ramoss
05-14-2009 10:10 PM


Re: single cell to multi cell shown as de-evolution
If facts sound like preaching I am sorry.

Edited by Adminnemooseus, : No reason given.


This message is a reply to:
 Message 7 by ramoss, posted 05-14-2009 10:10 PM ramoss has not yet responded

Replies to this message:
 Message 9 by Coyote, posted 05-14-2009 10:38 PM OriginLifeandDeath has not yet responded

    
Coyote
Member (Idle past 269 days)
Posts: 6117
Joined: 01-12-2008


Message 9 of 10 (508592)
05-14-2009 10:38 PM
Reply to: Message 8 by OriginLifeandDeath
05-14-2009 10:16 PM


Re: single cell to multi cell shown as de-evolution
If facts sound like preaching I am sorry.

It sounds like you're flogging a self-published book with massive internet posting.

If you had facts and worthwhile theory you could get published in a peer-reviewed journal.

Have you tried the creationist websites? They might be more interested.

Edited by Adminnemooseus, : No reason given.


Religious belief does not constitute scientific evidence, nor does it convey scientific knowledge.
This message is a reply to:
 Message 8 by OriginLifeandDeath, posted 05-14-2009 10:16 PM OriginLifeandDeath has not yet responded

  
straightree
Member (Idle past 2914 days)
Posts: 57
From: Near Olot, Spain
Joined: 09-26-2008


Message 10 of 10 (508961)
05-17-2009 4:20 PM
Reply to: Message 5 by ramoss
05-14-2009 2:59 PM


I take it the next step would be for individuals to become more specialized in a colony?? .

Indeed.

One of the best known examples of colonies, still living in our present day is alga Volvox. Flagellated single cell individuals form colonies, that move by flagellum propulsion. The cells that are in one pole of the colony specialize in directing movement, using photo sensible spots. The ones in the opposite pole specialize in reproduction. A very common pattern, to be found in most animals, though algae are not in the line of animal evolution, but plants!
To find more about Volvox, see this Wikipedia page http://en.wikipedia.org/wiki/Volvox


This message is a reply to:
 Message 5 by ramoss, posted 05-14-2009 2:59 PM ramoss has not yet responded

  
Newer Topic | Older Topic
Jump to:


Copyright 2001-2018 by EvC Forum, All Rights Reserved

™ Version 4.0 Beta
Innovative software from Qwixotic © 2019