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|    talk.origins    |    Evolution versus creationism (sometimes    |    142,579 messages    |
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|    Message 141,927 of 142,579    |
|    MarkE to RonO    |
|    Re: ID's assertion and definition of a "    |
|    10 Dec 25 20:40:33    |
      [continued from previous message]              > and got absorbed by the Neanderthals, so it makes Neanderthals more       > closely related to modern humans than are Denisovans. When has enough       > micro evolution occurred in order to call it macro evolution?              Many creationists accept microevolution (probably a majority?), e.g.       Darwin's finches. This is the standard ID position.              Therefore, you're begging the question by asserting as fact that       macroevolution is essentially microevolution + time.              Nothing to see here folks.                     >       > Ron Okimoto       >       >       >>       >>>       >>>>       >>>> The issue though is not what fraction of the possible protein space       >>>> life has explored, but rather how explorable is it? E.g. is it       >>>> sparse plains with occasional local maxima, or is it a rugged       >>>> terrain of endless valleys and ridges? In either case, the maxima       >>>> will be mostly undiscoverable to incremental search relying on       >>>> incremental improvements each conferring survival advantage       >>>> sufficient to drive the associated mutation to fixation in the       >>>> population.       >>>       >>> Your adaptive immune system would not work if the search parameters       >>> were what you want them to be. Biological evolution by descent with       >>> modification works because the space that needs to be 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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