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EvC Forum ⇒ Science Forums ⇒ Biological Evolution ⇒

Directly Observed Mutation

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Author Topic:   Directly Observed Mutation
coffee_addict
Member (Idle past 119 days)
Posts: 3645
From: Indianapolis, IN
Joined: 03-29-2004

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Message 4 of 50 (153977)
10-29-2004 12:11 AM 		Reply to: Message 1 by markoo
10-28-2004 10:36 PM

Does the tetraploid rat in Argintina count?
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Page not found - My Kratom And Weed Blog
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http://www.cricyt.edu.ar/...s/iadiza/ojeda/grecia%202000.htm
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First Tetraploid Mammal Reported
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quote:
"It's a highly specialized animal that has adapted well to living with little water," Honeycutt said. "It has to have certain conditions to live. It has brushes in its mouth, for example, to strip sage for eating."
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We have also observed a mutation in a lab condition where a group of snails gained a mutation that caused the shape of their shells to change preventing them from physically mate with snails of the original population.
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Pinky writes:
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The researchers witnessed a speciation event in a closed population they were studying, a single gene mutation changed the shell pattern of a snail, and the constraints of the new shell shape prevent the snails with the two types of shells from aligning their genitals to mate. But, the old-shelled snails could mate with the old-shelled, and the new-shelled could mate with other new-shelled snails. Thus snails with the shell-changing mutation are incapable of "interbreeding" with the ones without the mutation - even if they are sitting next to each other in the same pond - thus reproductive isolation.
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http://EvC Forum: Natural Selection - not natural?
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Want more examples?
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adminjar edited url to fix display width issue
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This message has been edited by AdminJar, 10-30-2004 09:28 AM
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He's not dead. He's electroencephalographically challenged.
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The longest word in the English language is pneumonoultramicroscopicsilicovolcanoconiosis.
This message is a reply to:
 Message 1 by markoo, posted 10-28-2004 10:36 PM markoo has not replied
  
coffee_addict
Member (Idle past 119 days)
Posts: 3645
From: Indianapolis, IN
Joined: 03-29-2004

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Message 17 of 50 (154752)
11-01-2004 1:46 AM 		Reply to: Message 15 by RustyShackelford
11-01-2004 1:10 AM

RustyShackelford writes:
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But that's microevolution...
Please read Message 4 by moi. Would you say that those examples were micro or macro evolution?
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He's not dead. He's electroencephalographically challenged.
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The longest word in the English language is pneumonoultramicroscopicsilicovolcanoconiosis.
This message is a reply to:
 Message 15 by RustyShackelford, posted 11-01-2004 1:10 AM RustyShackelford has not replied
  
coffee_addict
Member (Idle past 119 days)
Posts: 3645
From: Indianapolis, IN
Joined: 03-29-2004

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Message 20 of 50 (154759)
11-01-2004 2:11 AM 		Reply to: Message 19 by RustyShackelford
11-01-2004 1:53 AM

Re: micro - macro
Can you give us an example so we can go from there?
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He's not dead. He's electroencephalographically challenged.
​
The longest word in the English language is pneumonoultramicroscopicsilicovolcanoconiosis.
This message is a reply to:
 Message 19 by RustyShackelford, posted 11-01-2004 1:53 AM RustyShackelford has replied
Replies to this message:
 Message 25 by RustyShackelford, posted 11-01-2004 2:22 PM coffee_addict has replied
  
coffee_addict
Member (Idle past 119 days)
Posts: 3645
From: Indianapolis, IN
Joined: 03-29-2004

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Message 23 of 50 (154765)
11-01-2004 3:24 AM 		Reply to: Message 22 by crashfrog
11-01-2004 2:45 AM

Damn, crash. I was hoping that he'd find that out by himself and see how silly his statements are.
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He's not dead. He's electroencephalographically challenged.
​
The longest word in the English language is pneumonoultramicroscopicsilicovolcanoconiosis.
This message is a reply to:
 Message 22 by crashfrog, posted 11-01-2004 2:45 AM crashfrog has not replied
  
coffee_addict
Member (Idle past 119 days)
Posts: 3645
From: Indianapolis, IN
Joined: 03-29-2004

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Message 29 of 50 (154907)
11-01-2004 2:29 PM 		Reply to: Message 25 by RustyShackelford
11-01-2004 2:22 PM

Re: micro - macro
Please be more specific.
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I'm not sure what you are talking about, but that doesn't sound to me like "activation" of recessive alleles. Sounds more adaptation due to seasonal variations to me. Either that or you are thinking about co-dominance or incomplete dominance. Without anything specific, I don't really know what you are talking about.
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He's not dead. He's electroencephalographically challenged.
​
The longest word in the English language is pneumonoultramicroscopicsilicovolcanoconiosis.
This message is a reply to:
 Message 25 by RustyShackelford, posted 11-01-2004 2:22 PM RustyShackelford has not replied
  
coffee_addict
Member (Idle past 119 days)
Posts: 3645
From: Indianapolis, IN
Joined: 03-29-2004

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Message 32 of 50 (154910)
11-01-2004 2:32 PM 		Reply to: Message 28 by RustyShackelford
11-01-2004 2:29 PM

Re: micro - macro
RustyShackelford writes:
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Contrary to this (and despite Crash and Lam playing dumb), micro-evolution is no evidence for the unlimited variablity of living things.
Could you please look at Message 4 and tell me if those are examples of macro or micro evolution? And stop trying to dodge this one.
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He's not dead. He's electroencephalographically challenged.
​
The longest word in the English language is pneumonoultramicroscopicsilicovolcanoconiosis.
This message is a reply to:
 Message 28 by RustyShackelford, posted 11-01-2004 2:29 PM RustyShackelford has replied
Replies to this message:
 Message 34 by RustyShackelford, posted 11-01-2004 2:37 PM coffee_addict has replied
  
coffee_addict
Member (Idle past 119 days)
Posts: 3645
From: Indianapolis, IN
Joined: 03-29-2004

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Message 41 of 50 (154960)
11-01-2004 3:29 PM 		Reply to: Message 34 by RustyShackelford
11-01-2004 2:37 PM

Re: micro - macro
RustyShackelford writes:
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Can you give me proof that this animal's existance was caused by evolution?
Well, there's no such thing as proving whether something is as a result of evolution or not. However, the examples I gave clearly show the rise of new species due to mutation and natural selection. Other than that, I can assure you that none of the scientists that were present to observe the new species observe an old man with white beard poking at the animal and making new species out of them.
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I would also like to point out that you are trying to move the goal post. To be honest, I'm a little annoyed by this. First you ask for specific examples of observed speciation and I gave you some. Then, you try to change the topic and question whether it was divine intervention or evolution that was responsible for the speciation.
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Pick a topic and stay with it! If you want to question whether speciation is a result of evolution or not, start a freaking new topic.
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He's not dead. He's electroencephalographically challenged.
​
The longest word in the English language is pneumonoultramicroscopicsilicovolcanoconiosis.
This message is a reply to:
 Message 34 by RustyShackelford, posted 11-01-2004 2:37 PM RustyShackelford has not replied
Replies to this message:
 Message 42 by crashfrog, posted 11-01-2004 3:33 PM coffee_addict has replied
  
coffee_addict
Member (Idle past 119 days)
Posts: 3645
From: Indianapolis, IN
Joined: 03-29-2004

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Message 43 of 50 (154963)
11-01-2004 3:33 PM 		Reply to: Message 31 by RustyShackelford
11-01-2004 2:31 PM

Re: micro - macro
What about sickel cell that we find in people of African origin? If you are a heterozygous then you are immune to malaria. If you are a homozygous then you have sickel cell disease. The mutation practically saved the African population thousands of years ago. Is that an example of mutation that contributed to human evolution?
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He's not dead. He's electroencephalographically challenged.
​
The longest word in the English language is pneumonoultramicroscopicsilicovolcanoconiosis.
This message is a reply to:
 Message 31 by RustyShackelford, posted 11-01-2004 2:31 PM RustyShackelford has not replied
Replies to this message:
 Message 45 by crashfrog, posted 11-01-2004 3:35 PM coffee_addict has not replied
  
coffee_addict
Member (Idle past 119 days)
Posts: 3645
From: Indianapolis, IN
Joined: 03-29-2004

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Message 44 of 50 (154964)
11-01-2004 3:35 PM 		Reply to: Message 42 by crashfrog
11-01-2004 3:33 PM

Re: You're Selling Yourself Short
I think he was trying to say "how do you know god didn't intervene and created those species?"
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He's not dead. He's electroencephalographically challenged.
​
The longest word in the English language is pneumonoultramicroscopicsilicovolcanoconiosis.
This message is a reply to:
 Message 42 by crashfrog, posted 11-01-2004 3:33 PM crashfrog has not replied
  
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