The Naked Scientists
  • Login
  • Register
  • Podcasts
      • The Naked Scientists
      • eLife
      • Naked Genetics
      • Naked Astronomy
      • In short
      • Naked Neuroscience
      • Ask! The Naked Scientists
      • Question of the Week
      • Archive
      • Video
      • SUBSCRIBE to our Podcasts
  • Articles
      • Science News
      • Features
      • Interviews
      • Answers to Science Questions
  • Get Naked
      • Donate
      • Do an Experiment
      • Science Forum
      • Ask a Question
  • About
      • Meet the team
      • Our Sponsors
      • Site Map
      • Contact us

User menu

  • Login
  • Register
  • Home
  • Help
  • Search
  • Tags
  • Recent Topics
  • Login
  • Register
  1. Naked Science Forum
  2. Life Sciences
  3. Plant Sciences, Zoology & Evolution
  4. Did life evolve twice? Or even more?
« previous next »
  • Print
Pages: [1] 2   Go Down

Did life evolve twice? Or even more?

  • 23 Replies
  • 22405 Views
  • 2 Tags

0 Members and 4 Guests are viewing this topic.

Offline Petrochemicals (OP)

  • Naked Science Forum King!
  • ******
  • 3629
  • Activity:
    8%
  • Thanked: 182 times
  • forum overlord
Did life evolve twice? Or even more?
« on: 04/08/2023 00:01:08 »
Or are trees sentient. Life became, entities that photosynthesise, animals also are, so are they from the same genesis?

I can imagine this question will annoy vegans.
Logged
For reasons of repetitive antagonism, this user is currently not responding to messages from;
BoredChemist
To ignore someone too, go to your profile settings>modifyprofie>ignore!
 
The following users thanked this post: Zer0



Offline Kryptid

  • Global Moderator
  • Naked Science Forum King!
  • ********
  • 8082
  • Activity:
    2.5%
  • Thanked: 514 times
Re: Did life evolve twice? Or even more?
« Reply #1 on: 04/08/2023 17:41:51 »
Animals and plants do share a common ancestor, yes. A lot of the same genes are present in both lineages. I don't know why vegans would be bothered by that fact. Being related to animals wouldn't make them conscious.
Logged
 

Offline Zer0

  • Naked Science Forum King!
  • ******
  • 1932
  • Activity:
    0%
  • Thanked: 232 times
  • Email & Nickname Alerts Off! P.M. Blocked!
Re: Did life evolve twice? Or even more?
« Reply #2 on: 06/08/2023 20:46:50 »
If only Veganz would know what it Truly means to have 2 Bananas in one go...

They'd almost be choked by Guilt!
Logged
1N73LL1G3NC3  15  7H3  481L17Y  70  4D4P7  70  CH4NG3.
 

Offline Petrochemicals (OP)

  • Naked Science Forum King!
  • ******
  • 3629
  • Activity:
    8%
  • Thanked: 182 times
  • forum overlord
Re: Did life evolve twice? Or even more?
« Reply #3 on: 06/08/2023 21:31:30 »
If scientists believe life could evolve on other worlds, why must it only evolve once here, perhaps new life is being created right now! Maybe the different animal varieties all had independant origins?
Logged
For reasons of repetitive antagonism, this user is currently not responding to messages from;
BoredChemist
To ignore someone too, go to your profile settings>modifyprofie>ignore!
 

Offline Kryptid

  • Global Moderator
  • Naked Science Forum King!
  • ********
  • 8082
  • Activity:
    2.5%
  • Thanked: 514 times
Re: Did life evolve twice? Or even more?
« Reply #4 on: 07/08/2023 01:21:37 »
Quote from: Petrochemicals on 06/08/2023 21:31:30
If scientists believe life could evolve on other worlds, why must it only evolve once here,

It's certainly possible that life arose more than once on Earth, but only one lineage seems to have survived.

Quote from: Petrochemicals on 06/08/2023 21:31:30
perhaps new life is being created right now!

That's not very likely, given that the conditions on Earth now are very different than on early Earth. There's also the issue of microbes scavenging any such organic chemicals and thus keeping them from developing further.

Quote from: Petrochemicals on 06/08/2023 21:31:30
Maybe the different animal varieties all had independant origins?

Given genetics and the fossil record, that is very unlikely.
Logged
 



Offline Petrochemicals (OP)

  • Naked Science Forum King!
  • ******
  • 3629
  • Activity:
    8%
  • Thanked: 182 times
  • forum overlord
Re: Did life evolve twice? Or even more?
« Reply #5 on: 07/08/2023 19:00:22 »
Quote from: Kryptid on 04/08/2023 17:41:51
Animals and plants do share a common ancestor, yes. A lot of the same genes are present in both lineages. I don't know why vegans would be bothered by that fact. Being related to animals wouldn't make them conscious.
So says you, you brute!

https://www.smithsonianmag.com/science-nature/the-whispering-trees-180968084/

Logged
For reasons of repetitive antagonism, this user is currently not responding to messages from;
BoredChemist
To ignore someone too, go to your profile settings>modifyprofie>ignore!
 
The following users thanked this post: Zer0

Offline Kryptid

  • Global Moderator
  • Naked Science Forum King!
  • ********
  • 8082
  • Activity:
    2.5%
  • Thanked: 514 times
Re: Did life evolve twice? Or even more?
« Reply #6 on: 07/08/2023 21:17:20 »
Quote from: Petrochemicals on 07/08/2023 19:00:22
Quote from: Kryptid on 04/08/2023 17:41:51
Animals and plants do share a common ancestor, yes. A lot of the same genes are present in both lineages. I don't know why vegans would be bothered by that fact. Being related to animals wouldn't make them conscious.
So says you, you brute!

https://www.smithsonianmag.com/science-nature/the-whispering-trees-180968084/

Communication doesn't make something conscious. Even individual cells communicate with each other.
Logged
 

Offline Petrochemicals (OP)

  • Naked Science Forum King!
  • ******
  • 3629
  • Activity:
    8%
  • Thanked: 182 times
  • forum overlord
Re: Did life evolve twice? Or even more?
« Reply #7 on: 07/08/2023 21:59:55 »
Quote from: Kryptid on 07/08/2023 21:17:20
Quote from: Petrochemicals on 07/08/2023 19:00:22
Quote from: Kryptid on 04/08/2023 17:41:51
Animals and plants do share a common ancestor, yes. A lot of the same genes are present in both lineages. I don't know why vegans would be bothered by that fact. Being related to animals wouldn't make them conscious.
So says you, you brute!

https://www.smithsonianmag.com/science-nature/the-whispering-trees-180968084/

Communication doesn't make something conscious. Even individual cells communicate with each other.
Again, this is your view, where do you put the line of consciousness.
Logged
For reasons of repetitive antagonism, this user is currently not responding to messages from;
BoredChemist
To ignore someone too, go to your profile settings>modifyprofie>ignore!
 

Offline alancalverd

  • Global Moderator
  • Naked Science Forum GOD!
  • ********
  • 21136
  • Activity:
    68.5%
  • Thanked: 60 times
  • Life is too short for instant coffee
Re: Did life evolve twice? Or even more?
« Reply #8 on: 07/08/2023 23:04:28 »
Anyone care to define consciousness?
Logged
Helping stem the tide of ignorance
 
The following users thanked this post: Zer0



Offline Kryptid

  • Global Moderator
  • Naked Science Forum King!
  • ********
  • 8082
  • Activity:
    2.5%
  • Thanked: 514 times
Re: Did life evolve twice? Or even more?
« Reply #9 on: 07/08/2023 23:15:17 »
Quote from: Petrochemicals on 07/08/2023 21:59:55
Again, this is your view

I don't think so. I don't know of any definitions of consciousness that say communication automatically equates to consciousness. If it did, then even old telegraphs are conscious.

Quote from: Petrochemicals on 07/08/2023 21:59:55
where do you put the line of consciousness.

The presence of qualia: https://en.wikipedia.org/wiki/Qualia
Logged
 

Offline alancalverd

  • Global Moderator
  • Naked Science Forum GOD!
  • ********
  • 21136
  • Activity:
    68.5%
  • Thanked: 60 times
  • Life is too short for instant coffee
Re: Did life evolve twice? Or even more?
« Reply #10 on: 08/08/2023 08:04:07 »
Circular definition - according to Wikipedia, qualia are identified by conscious experiences!
Logged
Helping stem the tide of ignorance
 

Offline Kryptid

  • Global Moderator
  • Naked Science Forum King!
  • ********
  • 8082
  • Activity:
    2.5%
  • Thanked: 514 times
Re: Did life evolve twice? Or even more?
« Reply #11 on: 08/08/2023 17:04:51 »
Quote from: alancalverd on 08/08/2023 08:04:07
Circular definition - according to Wikipedia, qualia are identified by conscious experiences!

I consider it more that qualia are conscious experiences.
Logged
 

Offline alancalverd

  • Global Moderator
  • Naked Science Forum GOD!
  • ********
  • 21136
  • Activity:
    68.5%
  • Thanked: 60 times
  • Life is too short for instant coffee
Re: Did life evolve twice? Or even more?
« Reply #12 on: 08/08/2023 17:49:07 »
Which makes the definition of consciousness not merely circular but a disappearing spiral.
Logged
Helping stem the tide of ignorance
 



Offline Petrochemicals (OP)

  • Naked Science Forum King!
  • ******
  • 3629
  • Activity:
    8%
  • Thanked: 182 times
  • forum overlord
Re: Did life evolve twice? Or even more?
« Reply #13 on: 08/08/2023 19:50:57 »
Quote from: alancalverd on 08/08/2023 17:49:07
Which makes the definition of consciousness not merely circular but a disappearing spiral.
Do you mean there has to be a self divined cut off point where you just have to bolt gun it through the head and barbecue it for dinner?
Logged
For reasons of repetitive antagonism, this user is currently not responding to messages from;
BoredChemist
To ignore someone too, go to your profile settings>modifyprofie>ignore!
 

Offline alancalverd

  • Global Moderator
  • Naked Science Forum GOD!
  • ********
  • 21136
  • Activity:
    68.5%
  • Thanked: 60 times
  • Life is too short for instant coffee
Re: Did life evolve twice? Or even more?
« Reply #14 on: 09/08/2023 18:45:00 »
Animals are incapable of synthesising several vital chemicals from inorganic ingredients, so every animal has to eat something that has lived - either a plant (which does the primary synthesis) or another animal. Thanks to the invention of cooking, humans have a very broad spectrum of edibles but find it necessary (and aesthetically desirable) to kill most of our prey before cooking it. The only exceptions seem to be shellfish and insects, either eaten alive or killed by cooking.

We know that plants respond to all sorts of stimuli and insult, and the octopus definitely has animal intelligence but no central nervous system, so it's probably impossible to distinguish usefully between consciousness and life in general. The vegetarian argument has scientific merit in terms of maximally efficient agriculture, but it's difficult to support veganism on any rational grounds.
Logged
Helping stem the tide of ignorance
 
The following users thanked this post: Zer0

Offline paul cotter

  • Naked Science Forum King!
  • ******
  • 2311
  • Activity:
    29.5%
  • Thanked: 260 times
  • forum grump
Re: Did life evolve twice? Or even more?
« Reply #15 on: 09/08/2023 19:50:55 »
One of the box jellfish has eight eyes but no brain. How can it see?
Logged
Did I really say that?
 

Offline Kryptid

  • Global Moderator
  • Naked Science Forum King!
  • ********
  • 8082
  • Activity:
    2.5%
  • Thanked: 514 times
Re: Did life evolve twice? Or even more?
« Reply #16 on: 09/08/2023 23:58:21 »
Quote from: paul cotter on 09/08/2023 19:50:55
One of the box jellfish has eight eyes but no brain. How can it see?

Perhaps it doesn't (in the sense that a human sees, anyway). Perhaps it's just a simple light detection system that is paired with a purely reflex-driven nervous system. I haven't looked it up, so I could be wrong.
Logged
 



Offline paul cotter

  • Naked Science Forum King!
  • ******
  • 2311
  • Activity:
    29.5%
  • Thanked: 260 times
  • forum grump
Re: Did life evolve twice? Or even more?
« Reply #17 on: 10/08/2023 13:26:07 »
Not my area of expertise ( if I have any!! ) but I would reckon the eyes function in local reflexes. An odd creature and not one to contact having a swim. I guess Evan_au would know a lot more about these.
« Last Edit: 10/08/2023 13:29:40 by paul cotter »
Logged
Did I really say that?
 

Offline Zer0

  • Naked Science Forum King!
  • ******
  • 1932
  • Activity:
    0%
  • Thanked: 232 times
  • Email & Nickname Alerts Off! P.M. Blocked!
Re: Did life evolve twice? Or even more?
« Reply #18 on: 10/09/2023 20:52:51 »
Interesting Topic!

Abiogenesis vs Panspermia.

Who knows what lurks in the deepest darkest Oceans, or 100 miles under the Earth.

ps - can dna & rna be classified as Seeds of Life?
Logged
1N73LL1G3NC3  15  7H3  481L17Y  70  4D4P7  70  CH4NG3.
 

Offline Kryptid

  • Global Moderator
  • Naked Science Forum King!
  • ********
  • 8082
  • Activity:
    2.5%
  • Thanked: 514 times
Re: Did life evolve twice? Or even more?
« Reply #19 on: 11/09/2023 00:51:27 »
The "RNA world theory" does indeed propose RNA as a precursor to modern life.
Logged
 
The following users thanked this post: Zer0



  • Print
Pages: [1] 2   Go Up
« previous next »
Tags: evolution  / consciousness 
 
There was an error while thanking
Thanking...
  • SMF 2.0.15 | SMF © 2017, Simple Machines
    Privacy Policy
    SMFAds for Free Forums
  • Naked Science Forum ©

Page created in 0.456 seconds with 74 queries.

  • Podcasts
  • Articles
  • Get Naked
  • About
  • Contact us
  • Advertise
  • Privacy Policy
  • Subscribe to newsletter
  • We love feedback

Follow us

cambridge_logo_footer.png

©The Naked Scientists® 2000–2017 | The Naked Scientists® and Naked Science® are registered trademarks created by Dr Chris Smith. Information presented on this website is the opinion of the individual contributors and does not reflect the general views of the administrators, editors, moderators, sponsors, Cambridge University or the public at large.