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Author Topic:   Origin of viruses
RAZD
Member (Idle past 1395 days)
Posts: 20714
From: the other end of the sidewalk
Joined: 03-14-2004


Message 7 of 24 (670780)
08-19-2012 12:02 AM
Reply to: Message 5 by Dr Jack
08-18-2012 6:17 PM


RNA world
Hi Mr Jack
No-one knows, nor is it clear that they share a common origin. There is some reason to believe some viruses predate cellular life ...
IIRC, there was some work on virus RNA\DNA that showed homologies between viruses in all branches of cellular life, indication a shared common ancestor.
Indeed there is the hypothesis that they are left overs from the RNA world before DNA and cellular live evolved, that they represent a more primitive form of life between pre-biotic chemical evolution and cellular life.
... but since viruses leave no fossils we have no direct evidence to work with.
Which leaves us with genetic evidence and (informed?) speculation.
Enjoy.

we are limited in our ability to understand
by our ability to understand
Rebel American Zen Deist
... to learn ... to think ... to live ... to laugh ...
to share.


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This message is a reply to:
 Message 5 by Dr Jack, posted 08-18-2012 6:17 PM Dr Jack has replied

Replies to this message:
 Message 8 by Dr Jack, posted 08-19-2012 4:33 AM RAZD has replied

  
RAZD
Member (Idle past 1395 days)
Posts: 20714
From: the other end of the sidewalk
Joined: 03-14-2004


Message 9 of 24 (670786)
08-19-2012 5:19 AM
Reply to: Message 8 by Dr Jack
08-19-2012 4:33 AM


Re: RNA world
Hey Mr Jack,
I'm going by Koonin et al (2006) The ancient Virus World and evolution of cells (open access). Which states:
Cool thanks.
btw -- do you know if viruses have ever been responsible for beneficial gene sequences? or do we only get deleterious and then neutralized ones.
Enjoy

we are limited in our ability to understand
by our ability to understand
Rebel American Zen Deist
... to learn ... to think ... to live ... to laugh ...
to share.


Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click)

This message is a reply to:
 Message 8 by Dr Jack, posted 08-19-2012 4:33 AM Dr Jack has replied

Replies to this message:
 Message 10 by Dr Jack, posted 08-19-2012 5:38 AM RAZD has seen this message but not replied

  
RAZD
Member (Idle past 1395 days)
Posts: 20714
From: the other end of the sidewalk
Joined: 03-14-2004


Message 12 of 24 (670790)
08-19-2012 6:18 AM
Reply to: Message 11 by Tangle
08-19-2012 6:14 AM


Hi Tangle,
(foreveryoung): How is it magic if the personality that brought the laws of physics into existence and is the source of all energy is able to manipulate those laws and energies to his own ends?
Because that's what magic is.
And if they did it all at the formation of the universe ... how would you know?
Enjoy.
Edited by RAZD, : splg

we are limited in our ability to understand
by our ability to understand
Rebel American Zen Deist
... to learn ... to think ... to live ... to laugh ...
to share.


Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click)

This message is a reply to:
 Message 11 by Tangle, posted 08-19-2012 6:14 AM Tangle has not replied

Replies to this message:
 Message 13 by onifre, posted 08-19-2012 5:33 PM RAZD has replied

  
RAZD
Member (Idle past 1395 days)
Posts: 20714
From: the other end of the sidewalk
Joined: 03-14-2004


Message 14 of 24 (670817)
08-19-2012 7:43 PM
Reply to: Message 13 by onifre
08-19-2012 5:33 PM


Hi onifre
They?
The accepted collective term for he/she/it/they these days.
Enjoy

we are limited in our ability to understand
by our ability to understand
Rebel American Zen Deist
... to learn ... to think ... to live ... to laugh ...
to share.


Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click)

This message is a reply to:
 Message 13 by onifre, posted 08-19-2012 5:33 PM onifre has not replied

  
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