True2Ourselves
Already a member? login
Divider
Divider
Divider
Divider
Divider
Divider
Divider
Divider
Divider
Divider
Divider
Divider
  
+
Register FAQ A-Z directory Calendar Search Today's Posts Mark Forums Read

True2Ourselves Forums   > Community Topics > Christianity & Science  > Experiments with Platinum Simulate Evolutionary Transition of Snails

Reply
 
Thread Tools Display Modes
  #1  
Old 10-11-2010, 08:36 AM
Lemuel's Avatar
Knight of the Forum
 
Join Date: Sep 2010
Posts: 931
Default Experiments with Platinum Simulate Evolutionary Transition of Snails

Quote:
Evolution doesn’t have to operate at a snail’s pace, even for snails. In experiments designed to simulate the evolutionary transition that produced slugs, researchers exposed baby snails to the metal platinum, causing the animals to develop without external shells. The research illustrates how a big leap on the evolutionary path of animal body plans might have occurred. It also reopens a can of worms concerning the development and evolution of an entire class of shelled creatures.

Scientists reared Marisa snails, best known for cleaning up algae and other debris in home aquariums, in petri dishes containing varying concentrations of platinum. At certain exposures, all of the roughly 80 percent of snails that survived were shell-less, Heinz Köhler of the University of Tübingen in Germany and his colleagues report in the September-October Evolution & Development. The researchers posit that the platinum is causing effects similar to the genetic mutation that turned off shell production in some snails, paving the way for their slug descendants.
Cool Evolution Trick: Platinum Turns Baby Snails Into Slugs | Wired Science | Wired.com
__________________
God, be merciful to me!
Help Thou my unbelief!
Let me see in Him that Thou would have me see in my fellow man.
Let me see in my brother that I see in Him whom I worship.

John 7:19
Did not Moses give you the law, and yet none of you keepeth the law?

Remember, always, the Angels wish...Selah!
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #2  
Old 10-11-2010, 04:47 PM
Suspended for Review
 
Join Date: Feb 2009
Posts: 3,359
Default Re: Experiments with Platinum Simulate Evolutionary Transition of Snails

And an associated story that was reported down here recently:

Evolution has been caught in the act, according to scientists who are decoding how a species of Australian lizard is abandoning egg-laying in favor of live birth.

Along the warm coastal lowlands of New South Wales (map), the yellow-bellied three-toed skink lays eggs to reproduce. But individuals of the same species living in the state's higher, colder mountains are almost all giving birth to live young. Evolution in Action: Lizard Moving From Eggs to Live Birth

The shells are getting thinner and thinnner and eventually become just a membrane.

"Now we can see that the uterus secretes calcium that becomes incorporated into the embryo—it's basically the early stages of the evolution of a placenta in reptiles," Stewart explained.

A classic case of evolution in action. And there's me been saying all this time that it happens too slowly to see. I may have to stand corrected on that.
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #3  
Old 10-11-2010, 05:42 PM
Mark's Avatar
Administrator
 
Join Date: Jul 2008
Posts: 3,713
Default Re: Experiments with Platinum Simulate Evolutionary Transition of Snails

Quote:
Originally Posted by Brad View Post
A classic case of evolution in action. And there's me been saying all this time that it happens too slowly to see. I may have to stand corrected on that.
Don't hold your breath... "remember the lemur" i.e. the transitional fossil that caused all the fuss.
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #4  
Old 10-11-2010, 06:37 PM
Suspended for Review
 
Join Date: Feb 2009
Posts: 3,359
Default Re: Experiments with Platinum Simulate Evolutionary Transition of Snails

I think people getting too excited about ‘missing links’ would always end up being disappointed. ‘Transitional fossil’ doesn’t have the same cache.

But this is apparently (I haven’t done a lot of checking into this) a significant and demonstrable change in the life cycle of members of the same species living in different areas. Classic divergent evolution.
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #5  
Old 10-11-2010, 07:23 PM
Mark's Avatar
Administrator
 
Join Date: Jul 2008
Posts: 3,713
Default Re: Experiments with Platinum Simulate Evolutionary Transition of Snails

Quote:
Originally Posted by Brad View Post
I think people getting too excited about ‘missing links’ would always end up being disappointed. ‘Transitional fossil’ doesn’t have the same cache.

But this is apparently (I haven’t done a lot of checking into this) a significant and demonstrable change in the life cycle of members of the same species living in different areas. Classic divergent evolution.
It happens every few centuries... these lizards get confused - just ask the natives. I'm personally still waiting for them to find bigfoot.
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #6  
Old 10-11-2010, 11:51 PM
LillianGrace
 
Posts: n/a
Default Re: Experiments with Platinum Simulate Evolutionary Transition of Snails




Did you know that Elvis is still alive?
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #7  
Old 10-12-2010, 05:00 AM
Unguiscati's Avatar
Senior Member
 
Join Date: Aug 2010
Posts: 91
Default Re: Experiments with Platinum Simulate Evolutionary Transition of Snails

Heh heh heh!
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


All times are GMT -5. The time now is 03:38 PM.


true2ourselves
 
 
 

Flashcoms

You need to upgrade your Flash Player.

Version 8 or higher is required.

download from http://www.adobe.com/go/getflashplayer

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29