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Author | Topic: The Nature of Mutations | |||||||||||||||||||||||
NosyNed Member Posts: 9004 From: Canada Joined: |
quote:So if there was a specific example of a mutation that was not there to be activated but occured by chance and that mutation confered benefit then you'd be wrong in your assertions? Just to clarify: You're saying that all beneficial mutations are a result of a gene activation? But you will agree that there are "real" mutations (that is genetic changes which were not there at all before)? What stops the "real" mutations from ever being beneficial?What causes the gene to be activated when needed? [This message has been edited by NosyNed, 04-12-2003]
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NosyNed Member Posts: 9004 From: Canada Joined: |
quote: Your example of the sickle cell mutation is one which has both deleterious effects and beneficial ones. OK. Are you saying in the above that if there was any mutation that didn't have the deleterious side effect that the sickle cell mutation does that it would still not be "beneficial"? How could you say that? Or do you mean that you don't think there can be any such mutation that while beneficial don't also have some deleterious effect?
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NosyNed Member Posts: 9004 From: Canada Joined: |
Could you try again? I don't seem to be smart enough or have enough command of the English language to make any sense whatsoever of your post.
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NosyNed Member Posts: 9004 From: Canada Joined: |
I think it is possible to say some specific mutations are deleterious without any reference to the environment.
Remember that some large fractions of all pregnancies spontaniously miscarry. If a mutation is behind a terminated pregnancy then I think it is deleterious independently of the environment it doesn't get to see.
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NosyNed Member Posts: 9004 From: Canada Joined: |
quote: Yes, I think so. Looked at that way. It can be abstracted further I supose. The mutation is simply a change in a code. The code is meaningless without the environment to read it. So it all comes down to the interaction of the code and the environment.
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NosyNed Member Posts: 9004 From: Canada Joined: |
Why thank you. And I'm new here.
But seriously, that's only one way to look at it. The "environment" of the cellular machinery that the code must survive in is pretty stringent. I don't remember the specific ones but I believe there are genes that are common to all of us (right back to bacteria). These control the cellular division and such if I remember correctly. These seem to be very locked in as any changes would break them and therefore be "deleterious". As the environment becomes more stable and more stringent then any change is deleterious. In an environment with lots of variation and lots of change then there is room for more mutations to find value. Hmmm I'm not sure how much sense that made.
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NosyNed Member Posts: 9004 From: Canada Joined: |
quote: Are you saying that there are no new species?
quote: And what are those original "kinds"? And what is the barrier between them?
quote: What would you take as evidence for this? What would the minimum be that you would require? Do I have to see a reptile change into a bird in one generation in front of your eyes?
quote: And what does this have to do with anything?
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NosyNed Member Posts: 9004 From: Canada Joined: |
quote: So you take a kind as being equivalent to species? So there were more than 3,000,000 kinds on the ark. Is that correct?And if a new species arose you'd be wrong. Is that correct? By this I mean any living thing which was viable in itself but could not interbreed with species which had been ancestral to it. quote:Oops, this statment is invalid in itself without outside reference. You're saying that a negative has been "proven". Aside from that not finding an example does not demonstrate a barrier. Let's pretend there weren't any "transmutations" into "another species". That doesn't explain why. I asked you why it can't happen. What is the genetic barrier which makes it impossible? quote: So if a new speices arose that would be evidence? If a fossilized form (or preferably a series of them) that showed characteristics of one higher taxa and another mixed together that would be a "shed" of evidence. If the genomes of species (and higher taxa) which is where your barrier would have to be were closly related without any barrier visible then that would be evidence? In each of the above, if you say it wouldn't be evidence please give reasoning to support your position. No I don't know what you mean. I've assumed I know what people mean a lot of times and found out that just gets confusing. As best as I can tell you are confusing the origin of life with evolution. Will you confuse quantum physics with evolution next? {Fixed one quote box - AM} [This message has been edited by Adminnemooseus, 04-14-2003]
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NosyNed Member Posts: 9004 From: Canada Joined: |
quote: Oops, pardon me. Maybe you could tell me where the species came from then?
quote: So if an asexually reproducing organism changed from one generation to the next the "Law of Sterility" will somehow stop it from reproducting? I asked about what you would accept as evidence. Please elaborate. It is possible for a new species to arise. One that is separated from it's ancestral species by the so called "law of sterility" you know.While you're at it please give some more detail on exactly what the "law of sterility" is and who formulated it first. A reference or two would be nice. quote: But I offered a guess as to what you might be talking about in the original paragraph. You haven't told me what you were saying. So you now say you weren't confusing the origin of life issue with evolution. I've demonstrated that I don't know what you are getting at. You assertion of the quote above doesn't contain any meaningful information. It is a statement of your unsupported opinion. Go back and clarify the original paragraph please.Here is it in case you've forgotten. quote:
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NosyNed Member Posts: 9004 From: Canada Joined: |
quote: Are you suggesting otherwise? My reading of this research suggests this:1) The genetic changes that produce the nylon digesting capabilities are known. They are exactly a one unit addition witch shifts the code. 2) They are not present in the preceeding bacteria. It is an easy random mutation to get to it however. 3) In the environment of the experiment the mutation is beneficial. What part do you disagree with?
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NosyNed Member Posts: 9004 From: Canada Joined: |
Hey, don't worry about the mid game score! It's the score when the whistle blows that counts.
It's fun to see what issues are under discussion and who's ahead at any given time. Now the points can be updated. And thanks for the effort, bye the way. [This message has been edited by NosyNed, 04-24-2003]
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NosyNed Member Posts: 9004 From: Canada Joined: |
I signed up for a free subscription and can't read the full text.
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NosyNed Member Posts: 9004 From: Canada Joined: |
I think it's a winner but don't know what epigenetic means.
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NosyNed Member Posts: 9004 From: Canada Joined: |
Frog can assume a naturalistic paradigm all he wants too, but evidence demonstrates that this is a slap in the face to reality. How do you define "naturalistic paradigm"? As I understand it is an approach that uses exactly that for which there is "evidence" and excludes anything else. And by evidence I mean all the different forms of input that science uses and that it is repeatable as needed to produce a broad consensus of both skeptical and "friendly" observers. If you think you have "evidence" that suggest that the naturalistic paradigm need revision please tell us.
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NosyNed Member Posts: 9004 From: Canada Joined: |
Hang on!! Whoa
You just spun off topic. If you want to start talking ID and irreducible complexity then post this to a new topic or find the one it belongs under.
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