Single Universal ancestor of biology

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paradigm
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Single Universal ancestor of biology

Post by paradigm » Tue Nov 10, 2009 4:17 am

The idea of a single universal ancestor of all biology on Earth is mistaken.

Early eukaryotes and early bacteria evolved independently and later combined to form archaea.

This is represented with the paradigm which specifies construction and evolution across cosmology and biology.

The paradigm is presented in the essay, "Debunking Physics and Discovering the Logic of the Universe", which is locted at: http://members.westnet.com.au/paradigm/forever.pdf

paradigm

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canalon
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Post by canalon » Tue Nov 10, 2009 3:19 pm

You have one post to provide evidence for your "paradigm shift" If you cannot make your case, you better stop posting, or I will use my evil mod power to do so.
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Chroma
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Re: Single Universal ancestor of biology

Post by Chroma » Tue Nov 10, 2009 7:54 pm

Archaea are formed from a combination of bacteria and eukaryotes? Not likely... General consensus is that Eukaryotes are formed from a combination of a bacteria and something that was more closely related to ancestral archaea. From my knowledge modern molecular analysis has continued to support this notion.

Any respectable hypothesis that would look to counter the consensus would need to explain the general relatedness of all living things (why even the most distantly related still share a very significant number of genes).

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jyaron
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Post by jyaron » Wed Nov 11, 2009 2:22 am

Chroma, you are correct in your statement regarding eukaryotes forming from a combination of bacteria and a primitive archaea, along with some scattered symbiotic events and horizontal gene transfers.

At least that's what PostDocs from the Center for Evolutionary Functional Genomics discussed in my course last week.
Experience: Cell Biology, Confocal Microscopy, Developmental Biology, Evolutionary Biology, Genetics, Genomics, Physiology

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LeoPol
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Post by LeoPol » Sat Dec 26, 2009 8:37 am

Common ancestor of all multicellular organisms were reasonable Myxomycetes. They managed to create a special company - the state, which then degenerated into a multicellular Myxomycetes. This Myxomycetes once had his eyes with the lens, touch, hearing, taste, brain, etc.
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mamoru
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Re: Single Universal ancestor of biology

Post by mamoru » Tue Feb 16, 2010 1:46 am

paradigm wrote:The idea of a single universal ancestor of all biology on Earth is mistaken.

Early eukaryotes and early bacteria evolved independently and later combined to form archaea.


Not likely. If you wish to posit that they evolved independently, then the onus is on you to explain why they share so much in common at the molecular-biological level, starting with the (nearly, but with a few exceptions) Universal Genetic Code. Do you have a biochemical model which suggests that the code associations are the result of laws of biochemistry and that such a code is inevitable? Can you refute the null hypothesis that suggests that at least some code associations were the result of "fixed accidents"?

Does your independent evolution idea have an explanation for the same holochirality of certain molecules (namely carbohydrates and amino acids) among the two?

What about the similarities and evidence that suggest that, despite the fact they do use the same type of phospholipids for membranes (glycerol-ester lipids) as eubacteria (which is probably from HGT from the endosymbiosis that lead to mitochondria), Eukarya appears to have originated from within the Archaea?

In short, is there anything in your model that simplifies it and gives it better explanatory power than the "Universal Common Ancestor" theory? Does your model have any predictive or retrodictive power by suggesting things to look for that would be evidence for this model?

If you want to come out and posit something like that, essentially overturning what is already a very fitting explanation for a very large body of evidence, you are going to not only need to explain the existing evidence but also provide some rather extraordinary evidence which suggests your model is better.

paradigm wrote:This is represented with the paradigm which specifies construction and evolution across cosmology and biology.

The paradigm is presented in the essay, "Debunking Physics and Discovering the Logic of the Universe", which is locted at: http://members.westnet.com.au/paradigm/forever.pdf

paradigm


Care to put that into layman's terms? I skimmed the biology section and it looks less like biology than it does numerology? I haven't read the whole thing, but it set of a lot of alarms in my pseudoscience detectors. :?
"Empathise with stupidity, and you're halfway to thinking like an idiot." - Iain M. Banks

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