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06-02-2013, 03:49 PM
Need a question answered.
What is the scientific proof that shows biological evolution started from a single cell?

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06-02-2013, 04:04 PM
RE: Need a question answered.
(06-02-2013 03:49 PM)kingschosen Wrote:  What is the scientific proof that shows biological evolution started from a single cell?


You'll never find a fossil of the first single celled organism... And evolution would have started before the cell anyway, though I'm not sure if it would be classified as life, or "biological" before the cell... but surely self-replicating
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06-02-2013, 04:13 PM
RE: Need a question answered.
(06-02-2013 03:49 PM)kingschosen Wrote:  What is the scientific proof that shows biological evolution started from a single cell?
there is no proof, some biologists think that life could've started several times but our tree of life is hegemonic and they're searching for other forms of "shadow life" as they call it.

If you mean that it could start from a multicellular organism, the fact that single cell organisms fossils predates multicellular ones is a big clue Tongue

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06-02-2013, 04:18 PM
RE: Need a question answered.
(06-02-2013 03:49 PM)kingschosen Wrote:  What is the scientific proof that shows biological evolution started from a single cell?
Well...here's some guys that created a multi-cellular organism from a single cell.

http://www.sciencedaily.com/releases/201...144330.htm

http://www.nsf.gov/news/news_summ.jsp?cntn_id=122828

Doesn't seem to be that difficult.
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06-02-2013, 04:33 PM (This post was last modified: 06-02-2013 04:48 PM by fstratzero.)
RE: Need a question answered.
(06-02-2013 03:49 PM)kingschosen Wrote:  What is the scientific proof that shows biological evolution started from a single cell?
Blink
Well here is the evidence of 23 universally conserved, essential proteins found in all known organisms.

http://www.brandeis.edu/now/2010/may/UCA...lease.html
http://news.nationalgeographic.com/news/...-ancestor/

I'll try to see if there are others...

But one thing I must make clear. All of life did not come from one cell, it came from a species. Billions of cells dieing and replicating. The evidence suggests that mutations from one species of single celled organisms lead to the diversification of life.

I'm going to look into phylogenetic trees and see if there is something more compelling there.
http://en.wikipedia.org/wiki/Evidence_of...e_patterns

All known extant (surviving) organisms are based on the same biochemical processes: genetic information encoded as nucleic acid (DNA, or RNA for viruses), transcribed into RNA, then translated into proteins (that is, polymers of amino acids) by highly conserved ribosomes. Perhaps most tellingly, the Genetic Code (the "translation table" between DNA and amino acids) is the same for almost every organism, meaning that a piece of DNA in a bacterium codes for the same amino acid as in a human cell. ATP is used as energy currency by all extant life. A deeper understanding of developmental biology shows that common morphology is, in fact, the product of shared genetic elements.

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06-02-2013, 04:53 PM
RE: Need a question answered.
(06-02-2013 04:18 PM)Julius Wrote:  
(06-02-2013 03:49 PM)kingschosen Wrote:  What is the scientific proof that shows biological evolution started from a single cell?
Well...here's some guys that created a multi-cellular organism from a single cell.

http://www.sciencedaily.com/releases/201...144330.htm

http://www.nsf.gov/news/news_summ.jsp?cntn_id=122828

Doesn't seem to be that difficult.
But they had one to work from, not the inexplicable original.
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06-02-2013, 05:02 PM
RE: Need a question answered.
(06-02-2013 03:49 PM)kingschosen Wrote:  What is the scientific proof that shows biological evolution started from a single cell?

Well, I would think something to consider would be that each cell contains a nucleus and each nucleus contains DNA - two molecules closely entwined with each other that contain the basic information for cells to replicate. Typically, when cells divide, the DNA strand tears apart and each part replicates the other part creating an exact duplicate.

DNA is in every living organism but not necessarily in every cell... human red and white blood cells don't contain DNA. There is speculation that DNA did not always perform the job of containing all that is necessary for a complete life form, human, fish or plant. In early biological life about 4 billion years ago, RNA probably performed this function but neither RNA nor DNA survive for billions of years under normal circumstances.

This might help you think about your question a bit differently. I'm in agreement with Nach - the fact that single cell organism fossils predate multicellular ones is probably about as close to an evolution starting point as it gets. But I really don't know. Shy

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06-02-2013, 07:37 PM
RE: Need a question answered.
(06-02-2013 04:53 PM)Mr Woof Wrote:  
(06-02-2013 04:18 PM)Julius Wrote:  Well...here's some guys that created a multi-cellular organism from a single cell.

http://www.sciencedaily.com/releases/201...144330.htm

http://www.nsf.gov/news/news_summ.jsp?cntn_id=122828

Doesn't seem to be that difficult.
But they had one to work from, not the inexplicable original.


Of course you mean the "as yet unexplained original". Drinking Beverage

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06-02-2013, 11:27 PM
RE: Need a question answered.
(06-02-2013 04:53 PM)Mr Woof Wrote:  
(06-02-2013 04:18 PM)Julius Wrote:  Well...here's some guys that created a multi-cellular organism from a single cell.

http://www.sciencedaily.com/releases/201...144330.htm

http://www.nsf.gov/news/news_summ.jsp?cntn_id=122828

Doesn't seem to be that difficult.
But they had one to work from, not the inexplicable original.
Exactly, but that was all the question asked - Evolution from a single Cell.

Now...if you want to know what is before, then we may be entring the regime of Abiogenesis - a realm that we don't know so much about yet. Give it time.
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07-02-2013, 12:10 AM
RE: Need a question answered.
It didn't necessarily have to be just one cell. It could have been a number of similar structures, in the same place at the same time.



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