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|    talk.origins    |    Evolution versus creationism (sometimes    |    142,579 messages    |
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|    Message 141,950 of 142,579    |
|    RonO to MarkE    |
|    Re: ID's assertion and definition of a "    |
|    13 Dec 25 11:13:47    |
      [continued from previous message]              >>>>>> searched is minimal and within what is possible. Really, new       >>>>>> antibodies that bind specific antigens would not be routinely       >>>>>> selected for by an immune response if the search parameters were       >>>>>> too distant from the existing protein sequences. If you look up       >>>>>> the abzyme work where they use the adaptive immune system to       >>>>>> evolve new enzymatic activity you will find that they have found       >>>>>> that less than 10 changes in the antibody sequence can produce the       >>>>>> new enzymatic activity that was selected for. It wasn't just any       >>>>>> enzymatic activity, but the one that they were selecting for.       >>>>>>       >>>>>> The paper that you put up trying to claim that too many new genes       >>>>>> needed to be produced to evolve multicellular animals should have       >>>>>> told you that very little protein space seems to have been needed       >>>>>> to be searched. Those thousands of new genes evolved after a basic       >>>>>> set of genes had already evolved, and they evolved over a billion       >>>>>> year period before the Cambrian explosion. The initial gene set       >>>>>> had been evolving for over 2 billion years to produce that       >>>>>> Eukaryotic gene set. It looked like nearly all the new genes that       >>>>>> evolved within the billion year period before the Cambrian       >>>>>> explosion had evolved from an existing gene. You should have seen       >>>>>> that in their tables of the origins of the new genes.       >>>>>>       >>>>>> It just turns out that very little protein space has had to be       >>>>>> tested to get to where we are now.       >>>>>>       >>>>>>>       >>>>>>> The way to and up countless Mount Improbables need to be largely       >>>>>>> smooth and monotonically increasing.       >>>>>>       >>>>>> The mount improbables are only in your head. What exists are just       >>>>>> additions to what had already existed.       >>>>>>       >>>>>>>       >>>>>>> I realise too that this not a settled question, and in some       >>>>>>> instances a random polymer can be effecively to function, e.g.       >>>>>>> https:// journals.plos.org/plosone/article?       >>>>>>> id=10.1371%2Fjournal.pone.0000096&utm_source=chatgpt.com       >>>>>>       >>>>>> The likely reason that nearly all new genes have evolved from       >>>>>> existing genes is that just a random sequence of amino acids will       >>>>>> fold up and could have some function, but most random sequences do       >>>>>> not efficiently produce the same structure. It can take time to       >>>>>> fold up, and the sequence might not fold up into the same       >>>>>> structure every time. De novo coding sequence that produces a new       >>>>>> protein has to go through a selective process where the sequence       >>>>>> needs to further evolve so that it will efficiently fold up into       >>>>>> its functional structure. Genes that have existed for billions of       >>>>>> years already fold up efficiently, and it turns out that just       >>>>>> changing the sequence a little can produce a new function, so we       >>>>>> end up with related gene families.       >>>>>>       >>>>>> There is even some stability issues with existing proteins, and       >>>>>> chaperone proteins have evolved to help them maintain the shape       >>>>>> they need to be in in order to function.       >>>>>>       >>>>>> It is just how life has adapted to reality.       >>>>>>       >>>>>> Ron Okimoto       >>>>>>>       >>>>>>>       >>>>>>>>       >>>>>>>>>       >>>>>>>>> ID posits a lawlike conservation of information, which I find       >>>>>>>>> intuitively appealing, but Dembski's efforts to formally define       >>>>>>>>> this have yet to land it seems.       >>>>>>>>>       >>>>>>>>>       >>>>>>>>>       >>>>>>>>>       >>>>>>>>>       >>>>>>>>       >>>>>>>       >>>>>>       >>>>>       >>>>       >>>       >>       >              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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