|
Register | Sign In |
|
QuickSearch
EvC Forum active members: 61 (9209 total) |
| |
The Rutificador chile | |
Total: 919,503 Year: 6,760/9,624 Month: 100/238 Week: 17/83 Day: 8/9 Hour: 1/2 |
Thread ▼ Details |
|
|
Author | Topic: What exactly is ID? | |||||||||||||||||||||||||||||||||||||||
Taq Member Posts: 10302 Joined: Member Rating: 7.1 |
Fallen writes: Intelligent Design is the idea that there are detectable signs of intelligence in the natural world.Nothing more, nothing less. Would it be fair to include the following? Intelligent Design also claims that these signs of intelligence exist in biological species and in the fundamental properties of the universe.
|
|||||||||||||||||||||||||||||||||||||||
Taq Member Posts: 10302 Joined: Member Rating: 7.1 |
You mention atibiotic resistance. What actually transpired in these cases is the antibiotic has removed most of the bacterial population except for a few hardy individuals who have a recessive resistant gene. This gene heretofore not employed and not expressed in the population, now lets the survivors suddenly flourish in an atmosphere that has exterminated their relatives. This situation will often reverse over time as a new medicine kills the first survivors. But the point to this scenario is that the bacteria maneuver only with the genes already in the gene pool, or genetic combination's normally appearing after conjugation, and not with true mutations. If I may lend a hand here . . . You are missing out on a very important experiment, the Lederberg-Lederberg (a husband and wife team) plate replica experiment. You can read the original paper here:
Link What they did was start with a single bacterium. From that bacterium they created a lawn of bacteria descended from that single ancestor on an agar plate. This agar plate had the standard growth media and no antibiotics and was called the master plate. They transferred these bacteria to plates containing antibiotic using a stamp like instrument. What they found was that the antibiotic resistant colonies came from the same spot on the original plate. Even more, they could pick bacteria from this area on the master plate, grow more of them, and use these bacteria to create a new master plate. Lo and behold there were a lot more resistant colonies on the copied plates. What this showed is that they could increase the number of resistant colonies without the bacteria ever coming into contact with antibiotics. The resistant mutants existed in the absence of antibiotics. Also, they were clonal. This experiment, along with the Luria-Delbruck experiment, demonstrated that beneficial mutations occur in the absence of selection. That is, mutations are random with respect to fitness. And in fact, antibiotic resistance is due to changes in DNA. For example: "Spontaneous, streptomycin-resistant derivatives of Erwinia carotovora subspecies carotovora strain ATTn10 were isolated. Sequencing of the rpsL (encoding the ribosomal protein S12) locus showed that each mutant was missense, with a single base change, resulting in the substitution of the wild-type lysine for arginine, threonine or asparagine at codon 43. "
link These antibiotic mutants do not have the same genes as their ancestors. They have different genes.
|
|||||||||||||||||||||||||||||||||||||||
Taq Member Posts: 10302 Joined: Member Rating: 7.1 |
However choice can still be detected as the originator of the information by observing the direct interactions between the mechanical transmitter and receiver, even if the systems have self replicated and we are only able to observe the ancestors of the original systems. How do you detect this? For example, which bases in this sequence are from the original and which have been added since then: 1 atgtcttacg aagctatttg ggctaaaaat caaagactaa atgacgtaga aattataaaa61 cttgaaaagg atggcttaga tgtaattgaa actataattg acaaatactc taaggaaggt 121 tatgattcaa taacgcctaa agatatgaat agatttaaat gggctggcgt ttacgaacaa 181 aagccaagag agggatactt tatgatgaga gttcgtatta attctggaat aatgacttca 241 gagcaagcaa aagttttagc agggattgct aaagattatg gacgtggaat tgcaaacgcc 301 tctacaagag gagctataca gtttcactgg gttcaggtag aagatttacc ttctatttat 361 gaaagattag aagcttgtgg cctaagtcct tttgaggctt gtggcgattg ccctagaacg 421 atagttggaa atcctcttgc tggaattgat aaagatgaac ttatggatac aactgaactt 481 gtagaacaag ttaataattt cttcttatta aacaaggatt tttctaattt accaagaaaa 541 tttaaaatat caatatcagc tagtatacat aatgcagctc atgcacaaat taatgatctt 601 gcctttactc cagcaacaaa aaaaattgat aatcaggacg taattggttt ccacgtatgg 661 gttggaggag gactttcagc aagccctcat ttagcacaaa aactagatat atttgttaaa 721 ccagaatatg tactaaaggt tgctgaaggt gtatgtacta tttttagaga ttatggatat 781 agggaaaaac gtactcgtgc ccgcttaaaa tttttagtag ctgactgggg agcagaaaaa 841 tttaagaata aattattaga atttactggg gatatgccaa gctcaggtga tgataaatta 901 gcttcatgga atgcatctta ttattttgga gtacattccc aaaatgaaga tggcaaaagc 961 tatattggtg ttagtttacc acttggagaa atcacttgtg atcaactttt agaacttgcc 1021 catatttcag aaaaatacgg agatagaaaa attagaacta cactatcaca aaatttaatt 1081 attacaggca taagtgatga agatatacct tctctattaa aaaaagatgt atttaaacaa 1141 ctttctccaa atccaagtat ttttacagga tacacaattt cttgtacagg taaagaattc 1201 tgtaatttag ccattgttga aacaaagaaa cgtgctaaag aagttatcga atatcttgat 1261 tctaaaatca aactagatac accgttacgt atccatttta caggttgtcc taattcttgt 1321 ggacaaaaac atatagctga tatcagcctc caaggtgcat taataaaaac cgaagatagc 1381 tgtgaggaag catttaccat atggcttggt ggtacactaa acaatggtgg gcagtttgca 1441 gaaaatctaa actaccgtgt aaaatctact gaggttcata tagttcttga gaaaataata 1501 actttctttg aaaaaagtaa gttagagaat gagactttta atgaatttat cgcaagagta 1561 ggaattagta aaatcacaga aaacatataa We can still recognize specific patterns being utilized to create specific conditions, to the exclusion of several others, that are received and utilized for a specific function. All other systems that we have ever observed in the whole of human history, that produce specified information, required an ability to make a choice. Therefore we can logically conclude that a choice was required (and detected) to form the specified information in DNA. How do you know that DNA is not the exception to this rule?
One way to detect that is by looking for a condition that was activated to the exclusion of several other conditions, in such a way that the condition has a significant meaning to both the transmitter and the receiver. Can you please give an example using DNA sequence? What are the transmitters and receivers and how do they decide which conditions to choose?
|
|||||||||||||||||||||||||||||||||||||||
Taq Member Posts: 10302 Joined: Member Rating: 7.1 |
This just shows you do not know, you actually still don't know what gentic entropy is supposed to be. It's teh deterioration of genetic information in the genome. This relates to Muller's Ratchet. "The theory of Muller' Ratchet predicts that small asexual populations are doomed to accumulate ever-increasing deleterious mutation loads as a consequence of the magnified power of genetic drift and mutation that accompanies small population size."--source However, the evidence indicates two things. First, compensatory mutations arise which ameliorate the effects of slightly deleterious mutations: "Isolates encoding DRSeq3 also show lower ND5 deletion levels, though the difference as compared to those that encode DRSeq1 is not significant (P > 0.10, two-tailed t-test). When considered as groups, mean heteroplasmic deletion levels were higher in tropical-clade isolates (12.1%) as compared to temperate-clade isolates (7.3%), though the difference was not significant (P > 0.9, two-tailed t-test). We also analyzed fecundity variation with respect to the three sequence motifs and found that isolates encoding DRSeq2 displayed significantly elevated fecundity as compared to those encoding DRSeq1 (P < 0.001, two-tailed t-test) — see Figure 4C. Fecundities in isolates encoding DRSeq3 and DRSeq1, however, were highly similar and not significantly different (P > 0.1, two-tailed t-test). The relatively low ND5 deletion proportions and high fecundities associated with isolates encoding DRSeq2 are suggestive of compensatory mutation — in particular, the ND5-2 substitutions are expected to result in reduced interactions of directly repeated sequences in ND5-2 and ND5, thereby resulting in lower ND5 deletion incidences and higher fitness. However, we are again unable to account for the potential effects of nuclear loci."--same source as above So the first mechanism to overcome genetic entropy are mutations which increase fitness. That is, beneficial mutations. The second mechanism is negative selection. That is, those with the highest deleterious mutation rate are selected against. This ongoing process stops Muller's ratchet. "A decrease in nucleotide substitution rates over time suggests that selection may be limiting the effects of Muller's ratchet by removing individuals with the highest mutational loads and decreasing the rate at which new mutations become fixed."--source Like a CD. Copying it enough times, over and over again, to a new CD, and than take that one and copy it again, and this is going to add few mistakes here and there. Over enough time, enough information will be lost and the CD won't be useful anymore becasue you won't be able to read anything from it. In order for this to be an accurate analogy you need a source of selection. Edited by Taq, : No reason given.
|
|||||||||||||||||||||||||||||||||||||||
Taq Member Posts: 10302 Joined: Member Rating: 7.1 |
What got changed, the ribosome or the streptomycin? Obviously the ribosome. Therefore, it is the one that lost specificty. Would a gain in specificity be a gain in specified information?
Both show beneficial mutations increasing genetic entropy by degrading biological functions.
Would a gain in function be an increase of specified information?
|
|||||||||||||||||||||||||||||||||||||||
Taq Member Posts: 10302 Joined: Member Rating: 7.1 |
Another important element in this is the existence of synergystic epistatic effects, where the fitness burden of multiple deleterious mutations is greater than the product of their effects in isolation. As you probably already know, this is why sexual recombination is such an important mechanism and the "cure" for Muller's Ratchet. When recombination puts several deleterious mutaitons in the same haploid genome this genome is strongly selected for resulting in selective sweeps of deleterious mutations. Using SO's CD analogy, imagine making two copies of the CD and randomly swapping bits between the copies. You then check both copies for errors and elimate the one with the most errors, or better yet eliminate the copies that fall below a specific QC level. Edited by Taq, : No reason given.
|
|||||||||||||||||||||||||||||||||||||||
Taq Member Posts: 10302 Joined: Member Rating: 7.1
|
It doesn't matter if it lost affinity specifically to streptomycin. It probably can bind to something else too. The original structure is the original information content. Now, if it loses the affinity, to anything, it got degraded, and it lost information. Then evolution necessarily requires a loss in information according to your definition. For example, both the chimp and human lineages lost information found in the original common ancestor. Chimps and humans are degraded, according to you. The same for all mammals (including humans) as they have degraded from the common ancestor of mammals. The same for all amniotes, all vertebrates, all eukaryotes, and ever single species since the last universal common ancestor. By extension, you are arguing that when an organism evolves from a simple state to a complex state this is a degradation event because the information for making a simple organism has been degraded. You have argued your way out of the debate. You claim that evolution requires new information, and yet observed instances of evolution do not produce this entity. Therefore, evolution does not require new information. You are out of the game.
I see no reason why a bunch of mutations couldn't build a fully functional ATP synthase. I mean, it won't happen. But if it did, it would be an increase in FSC for sure. No it wouldn't, at least according to you. Any change from the original DNA sequence is a degradation.
|
|||||||||||||||||||||||||||||||||||||||
Taq Member Posts: 10302 Joined: Member Rating: 7.1
|
Notice what the article claims. It says that during the course of mammalian evolution, teh body size had increased. Therefore, the accumulation of slightly deleterious mutations increased also. And than they finish it off by saying that this could contribute to the extinction of large mammals. The article claims that mammalian evolution trends towards larger body size in many lineages. Obviously, this isn't so in all lineages. Mice, for example, are quite small and they are . . . hmm, let me think . . . oh yes . . . MAMMALS. According to the paper, their population size prevents the accumulation of deleterious mutations compared to larger mammal lineages.
|
|||||||||||||||||||||||||||||||||||||||
Taq Member Posts: 10302 Joined: Member Rating: 7.1
|
Do you have evidence for evolution which is not evidence for evolution? Our detector, in this case, is phylogenetic comparisons of DNA. This detector is capable of telling us "evolved" and "not evolved". For example, we can compare the genes of Glofish (link), jellyfish, and trout. What we should find, if evolution is true, is that the Glofish genes should more closely resemble that of trout than of jellyfish. What do we find? We find that this is false for certain genes. Why is that? Because these genes DID NOT EVOLVE. Glofish contain genes which are almost exact copies of genes found in jellyfish, but not found in trout. How did this happen? Through intelligent design. Humans moved genes from jellyfish into Glofish to make them fluoresce under UV lights. There you have it. A detector that can detect both evolution and not evolution. So what detector will tell us ID or not ID?
|
|||||||||||||||||||||||||||||||||||||||
Taq Member Posts: 10302 Joined: Member Rating: 7.1 |
As the title implies, is this change in enzyme specificity an example of an increase in CSI?
quote: |
|||||||||||||||||||||||||||||||||||||||
Taq Member Posts: 10302 Joined: Member Rating: 7.1 |
The ribosome is arbitrary in some ways, it is not 100% conserved amongst all species so clearly there is some allowable variation at different positions. You have decided to arbitrarily decree that any mutation changing the sequence from its inital state is a loss of information. Similarly Durston et al. arbitrarily decree that any change away from their consensus sequence will be a loss of information. You talk about multiple mutations giving rise to a functional ATP synthase gene, but that misses my point about novel mutations. If you take a random sequence and put it through multiple rounds of mutation and selection until you eventually produce a sequence which matches that of a consensus ATP synthase then using Durston et al.'s method we will have arguably increased the information for that sequence, but only to match a sequence we already had we haven't generated truly novel information. Adding to this, when sequences are treated in this arbitrary manner you also commit the Sharpshooter Fallacy. ATP synthase was not the target or goal. Rather, increased fitness was the goal. It is entirely possible that an enzyme catalyzing a different chemical reaction could have been found. Calcuating the odds of a specific enzyme arising through evolution misses the boat. You also need to add in every single amino acid sequence that would have increased fitness through a new metabolic pathway. The same applies to the flagellum. You need to find every single possible motility system in order to calculate the probabilities. Using an analogy, using the ID version of CSI the probability of anyone winning the lottery is 1 in 150 million or so. According to ID logic it should take 150 million lottery drawings before anyone wins.
|
|||||||||||||||||||||||||||||||||||||||
Taq Member Posts: 10302 Joined: Member Rating: 7.1 |
Exactly. The more time passes, the genetic entropy increases. All populations are getting worse, not better. Because theri biological functions are degrading. So let me get this straight. Simple unicellular organisms are the acme of evolution while multicellular metazoans are just a degraded version of these unicellular organisms. Is that correct?
No, what this simply means is that evolution doesn't work. I think it's clear to anyone,t hat if evolution requires somehting to be produced for it to work, and if it is observed not to be produced, that we are going to conclude that evolution is not working, and not that it is working. But we observe evolution occuring and we do not observe what you define as new information. Obviously, evolution does not require this "new information" in order for it to proceed. You have argued your way out of the debate.
How do you know the similar genes are evolved? Aren't you first assuming common descent to be true, to than turn and claim that this is evidence for common descent? I am assuming nothing. I make a prediction. I predict that if a gene descended from a common ancestor that a phylogenetic comparison should produce a nested hierarchy consistent with the morphological trees. As I have already shown the GFP gene in Glofish causes them to fail this test. We are testing FOR common ancestry, not assuming it.
|
|||||||||||||||||||||||||||||||||||||||
Taq Member Posts: 10302 Joined: Member Rating: 7.1 |
As far as those materialists around here, I will not post back to them and I do expect some of them to post to me. So I am going to ignore them for now. I already defeated many of them and some of their arguments are severely flawed but they just don't know it yet or never will! I want to talk to ID proponents. Flawed? Your claims lead to a very serious problem. You claim that an accumulation of mutations, filtered through selection, which lead to a more complex organism constitute a loss of information.
I would also agree with someone who stated much of the CSI in proteins is not really CSI because much of it tolerates mutations without altering the functions of cellular machinery. In my opinion, this was the result of foresight of an intelligent designer. What about mutations that result in a different function? Edited by Taq, : No reason given.
|
|||||||||||||||||||||||||||||||||||||||
Taq Member Posts: 10302 Joined: Member Rating: 7.1 |
Brad H writes: Nucleotides are arranged to effect the proteins in such a way that an eye is built, or fingers and finger nails, or a beating heart. The nucleotides in DNA are no more arranged for a specific effect than lottery numbers are drawn to get a specific winner. You are specifying after the fact. What we see with DNA is a continuous record of winners. The environment doesn't know which sequence of DNA to pick. The organism doesn't pick which mutations will be occur in it's germ line cells. The offspring doesn't choose which of these mutations it will inherit. The whole process of evolution is completely blind to DNA sequence, and it works just fine. Better yet, look at my avatar. Can you point to the bits of information in that picture? If you saw the same arrangement of string on the floor would you call it information? Better yet, if you saw my avatar represented with string next to the word "SOS" written in string which would you say contains information?
However what I am stating is that I have never heard of a phenotype changing as a result of "observed" added (new) information to the chromosomal DNA. Meet the Nylon Bug: http://www.nmsr.org/nylon.htm This bacteria evolved a new enzyme capable of breaking down nylon oligomers. This new enzyme arose by the insertion of a single base resulting in a new reading frame. Can you explain why an insertion of a new base resulting in a new enzyme with novel function constitutes a loss in information?
|
|||||||||||||||||||||||||||||||||||||||
Taq Member Posts: 10302 Joined: Member Rating: 7.1 |
With regards to your comments above, I was wondering if you could cite exactly where in the paper they state which nucleotides in the chromosomal DNA of the bacteria had an addition of protein information? I couldn’t find it in the portions of the paper you linked me to. It's not in the paper. If you notice the dates of publication these papers were written before DNA was fully understood. Nonetheless, their observations (i.e. the Lederbergs, Luria, and Delbruck) were spot on. They observed the emergence of a new, beneficial mutation in the absence of selection for that mutation. It is an unavoidable conclusion from the data. Since then the mutations are well understood. For bacteriophage resistance, the mutations which confer this phenotype occur in the tonB gene (ton refers to T-1 phage, the phage type used in the original Luria-Delbruck experiment). For antibiotic resistance there are a host of different mutations which confer resistance, and these occur at the same rate whether or not the antibiotic is present. It's not as if the bacteria have an antibiotic sensor protein that automatically mutates a specific region of DNA when it senses antibiotic.
What I am saying is that all mutations which occur (beneficial or detrimental) are the result of loss of information or loss of specificity or in other cases insertions and deletions. Then evolution does not need a gain in information in order for it to occur. All evolution needs is a change in variation due to mutation, and that is exactly what is observed. If we were to observe every mutation occuring from the first life to current humans you would conclude that every single DNA change is a loss in information.
But in all other organisms it is always a manipulation within the existing genes and not an example of added information to the chromosomal DNA of an organism. This is what we would need to see in order to convince an open minded skeptic, like my self, that molecules to man evolution is possible. You might as well claim that you need to see magical gravity pixies in order to accept that planes can fly. Evolution works just fine without needing an increase in what you call "information" just as a plane flies just fine without magical gravity pixies. Edited by Taq, : No reason given.
|
|
|
Do Nothing Button
Copyright 2001-2023 by EvC Forum, All Rights Reserved
Version 4.2
Innovative software from Qwixotic © 2024