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Author Topic:   Evolution - recent examples?
coffee_addict
Member (Idle past 476 days)
Posts: 3645
From: Indianapolis, IN
Joined: 03-29-2004


Message 3 of 39 (118459)
06-24-2004 10:58 PM
Reply to: Message 1 by tubi417
06-24-2004 8:52 PM


Yes.
Examples:
In laboratory experiments, people have observed bacterial cultures evolved to become anti-biotic resistant.
New species of plants arise all the time. Here is an article on speciation caused by polyploidy.
A new rat has also been found in Argentina that has twice the number of chromosomes as the normal rat. You can't find much on it right now because the species has only been discovered in (I think) 1998. Some believe that the rat came about because of an error in meiosis during reproduction of a normal rat probably 2 decades ago or so. There are some evidence that the rat is a lot more adaptive to the environment of the location than the normal rat. Keep your eyes open for future research on the rat.
Those are just some examples that came to my mind in 2 seconds.

The Laminator

This message is a reply to:
 Message 1 by tubi417, posted 06-24-2004 8:52 PM tubi417 has replied

Replies to this message:
 Message 6 by tubi417, posted 06-24-2004 11:36 PM coffee_addict has replied
 Message 33 by mitigo, posted 12-19-2004 3:51 AM coffee_addict has replied

  
coffee_addict
Member (Idle past 476 days)
Posts: 3645
From: Indianapolis, IN
Joined: 03-29-2004


Message 5 of 39 (118471)
06-24-2004 11:30 PM
Reply to: Message 1 by tubi417
06-24-2004 8:52 PM


This is a preemptive strike against anyone that is going to argue that we haven't observed any "macro-evolution" (no, I'm not a Bush fan).
Micro and macro evolution are pretty much the same thing. The difference is that one happens over a short period of time and the other is just a combination of a whole bunch of the first one. Microevolution happens all the time. People observe it on a daily basis. A whole bunch of microevolution will result in what you would call macroevolution.
Some people on the board will deny that there is no difference, and I somewhat agree. To use crashfrog's example, microevolution is like taking a walk to the house next door and macroevolution is like taking a walk to the next town, the next state, or the next country. It will take you a long long time to get there, but you will eventually get there by walking.
So, no, we haven't seen any iguana growing wings and turn into a bird. Give us another few million years or so and I'll give you some examples of the so-called macroevolution.

The Laminator

This message is a reply to:
 Message 1 by tubi417, posted 06-24-2004 8:52 PM tubi417 has not replied

  
coffee_addict
Member (Idle past 476 days)
Posts: 3645
From: Indianapolis, IN
Joined: 03-29-2004


Message 8 of 39 (118481)
06-24-2004 11:45 PM
Reply to: Message 6 by tubi417
06-24-2004 11:36 PM


tubi417 writes:
In laboratory experiments with antibiodics and bacteria, it isn't really evolution though. The bacteria are killed off that aren't resistant, but aren't the resistant bacteria usually much weaker than the bacteria that weren't resistant?
Do you have a clue what evolution is?
The bacteria example IS an example of evolution. I'll give you a hint: survival of the fittest.

The Laminator

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coffee_addict
Member (Idle past 476 days)
Posts: 3645
From: Indianapolis, IN
Joined: 03-29-2004


Message 28 of 39 (120920)
07-01-2004 5:39 PM
Reply to: Message 26 by Loudmouth
07-01-2004 4:18 PM


Re: Thanks
Loudmouth writes:
You would think that a unicellular organism becoming multicellular would be classified as macroevolution, but I would bet that none of the creationist would agree.
You can't really blame them though. Most of them lack the education background to even know the significance and differences between unicellular and multicellular life forms. To the creationists, those little creatures are the same thing as all other microscopic organisms. This is the reason why I have been depressed for the last 3 weeks or so, knowing that there are people that chose to go down the path of ignorance rather than the path of enlightenment.

The Laminator

This message is a reply to:
 Message 26 by Loudmouth, posted 07-01-2004 4:18 PM Loudmouth has replied

Replies to this message:
 Message 29 by Loudmouth, posted 07-01-2004 5:51 PM coffee_addict has replied
 Message 31 by RRoman, posted 07-01-2004 7:23 PM coffee_addict has not replied

  
coffee_addict
Member (Idle past 476 days)
Posts: 3645
From: Indianapolis, IN
Joined: 03-29-2004


Message 32 of 39 (120967)
07-01-2004 8:08 PM
Reply to: Message 29 by Loudmouth
07-01-2004 5:51 PM


Re: Thanks
True. Sometimes I wish I could ship them all off to some desolate island or planet somewhere where they can preach their ignorance all they want.
Loudmouth writes:
I am relieved that creationists make up such a small minority of practicing scientists.
Unfortunately, I once saw a survey that says that about 70 percent of Americans believe in creationism. Don't know if that is accurate, but I believe it since this country is rediculously religious and conservative.

The Laminator

This message is a reply to:
 Message 29 by Loudmouth, posted 07-01-2004 5:51 PM Loudmouth has not replied

  
coffee_addict
Member (Idle past 476 days)
Posts: 3645
From: Indianapolis, IN
Joined: 03-29-2004


Message 39 of 39 (172459)
12-31-2004 2:02 AM
Reply to: Message 33 by mitigo
12-19-2004 3:51 AM


mitigo writes:
Lam, how do we know the tetraploidy rat (Tympanoctomys barrerae) recently arose, as claimed:
I wrote that a long time ago and can't remember where I read it from or what's presented in it. At this point, I really don't feel like going around fishing for it again. If it makes you happy, consider that statement by me retracted Your question is about a year too late.
This message has been edited by Lam, 12-31-2004 02:03 AM

This message is a reply to:
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