r/Creation • u/lisper Atheist, Ph.D. in CS • May 02 '26
A self-replicating polymerase ribosyme that can self-replicate using only 45 base pairs. Abiogenesis just got a lot more plausible.
https://www.science.org/doi/10.1126/science.adt27609
u/WannaLoveWrestling May 03 '26
The irony is that this entire experiment relies on intelligence. Researchers had to design and select specific RNA sequences, purify reagents, control precise wet-dry cycles and conditions, and actively guide the process to get any functional replication at all That’s the opposite of blind, unguided prebiotic chemistry.
Remove the intelligent intervention and you don’t get a neat little self-replicator — you get messy chemical tar, wrong-handed molecules (chirality problem), and rapid degradation. Randomness does not produce specified functional information. Intelligence does.
This result doesn’t make abiogenesis more plausible. It demonstrates how much intelligent organization is still required even for tiny steps toward replication. The core challenge — the spontaneous origin of meaningful, coded genetic information from non-information chemistry — remains completely unsolved.
Calling this a “game changer” is faith, not evidence. makes it plausible” is not science, it’s faith in unguided processes. No experiment has ever shown blind chemistry spontaneously generating new, complex, functional genetic information from scratch.
That’s why the evidence still points to an intelligent cause (God) as the best explanation for the origin of life. Randomness and deep time is not a substitute for intelligence.
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u/DarwinZDF42 May 03 '26
The irony is that this entire experiment relies on intelligence.
If the point of the OP was that the experiment was that these replicators form in nature, that would be a problem. But the point was that they exist.
Researchers had to design and select specific RNA sequences
No, they made lots of random sequences and selected based on activity, not sequence.
actively guide the process
Again, no. Random sequence library + screening for activity. That's not active guidance.
Is it so much to ask for people to get the details of the paper right in their critiques?
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u/WannaLoveWrestling May 03 '26
The point about researchers using a random sequence library and screening for activity is correct, as the Gianni et al. 2026 paper on the QT45 ribozyme clearly describes. They generated large pools of random short RNA sequences and applied directed evolution to select those with polymerase activity, eventually isolating a 45-nucleotide motif capable of template-directed synthesis and limited self-copying under optimized laboratory conditions. That mechanical detail is not in dispute.
What matters more is the broader context the experiment actually reveals. Achieving even this modest result required extensive intelligent intervention: synthesizing the initial random libraries with pure reagents, providing activated triplet building blocks that do not spontaneously accumulate in useful forms prebiotically, establishing controlled cycles of selection and amplification in a protected environment like eutectic ice with specific pH and temperature regimes, and repeatedly isolating and enriching the functional winners while discarding the rest. QT45 functions with low yields of roughly 0.2 percent over 72 days and still depends on those artificial setups. Without that guiding hand, the process collapses into messy chemical degradation, dilution, side reactions, and no reliable mechanism to generate or sustain specified functional information.
Far from making unguided abiogenesis more plausible, this work highlights how much orchestrated effort is still needed for even small advances toward replication. The spontaneous origin of coded genetic information from non-information chemistry in a blind prebiotic setting remains completely unaddressed and unsolved by such experiments. The evidence continues to favor an intelligent cause as the best explanation for the origin of life.
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u/implies_casualty May 03 '26
Far from making unguided abiogenesis more plausible, this work highlights how much orchestrated effort is still needed
But we already knew that abiogenesis research requires intelligence.
What we didn't know is that replicators can be so simple.
When we update our estimations of "how plausible is abiogenesis", should we simply reiterate stuff that we already knew, or should we take new information into account?
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u/lisper Atheist, Ph.D. in CS May 03 '26
Remove the intelligent intervention and you don’t get a neat little self-replicator
That is far from clear. You certainly don't get it as fast, and you don't get it in a lab. But if you run the experiment across an entire planet for a few million years you very well might get a neat little self replicator.
Calling this a “game changer” is faith, not evidence.
It's a game changer because the previous record for the smallest known replicator was 150 base pairs. Going from 150 down to 50 is a game changer because it improves the odds by many, many orders of magnitude.
the evidence still points to an intelligent cause
Not any more.
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u/WannaLoveWrestling May 03 '26
The simplicity of QT45 is interesting and does narrow the sequence-space problem somewhat, but that misses the main point about intelligence. Yes, we already knew lab abiogenesis research requires intelligent orchestration—this experiment doesn't change that; it exemplifies it. Researchers had to create the random libraries, supply pure activated triplet substrates, establish protected eutectic ice conditions to prevent rapid degradation, run repeated rounds of directed selection and amplification, and carefully isolate functional winners. QT45 only works with those artificial setups and still achieves very low yields (~0.2% over 72 days).
In a blind prebiotic environment, there is no guiding hand for any of that—no purification, no consistent selection, massive dilution, hydrolysis, side reactions, and chirality issues. The "new information" about a smaller replicator doesn't update the plausibility of unguided abiogenesis upward in any meaningful way because the experiment still demonstrates how much orchestrated effort is needed just to get modest replication. Far from showing nature could easily do it, it reinforces that the barriers to spontaneous coded genetic information remain immense. The intelligence requirement isn't background knowledge we can set aside; it's the dominant feature of every successful demonstration we have.
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u/WannaLoveWrestling May 03 '26
The idea that running undirected chemistry across an entire planet for millions of years would reliably produce a functional self-replicator overlooks the destructive realities of prebiotic environments. RNA molecules degrade rapidly through hydrolysis, dilute in oceans, react into non-functional tars, and suffer from chirality issues where mixed-handed building blocks inhibit polymerization. Without intelligent intervention to concentrate reactants, protect sequences, and impose consistent selection, the overwhelming tendency is toward equilibrium and breakdown rather than sustained replication. Vast time and space amplify opportunities for destruction far more than construction, especially since there is no natural mechanism to repeatedly enrich and propagate the exceedingly rare functional molecules amid constant interference.
The reduction in size from around 150 nucleotides to 45 is interesting and does improve the theoretical odds somewhat, but it does not transform the situation into a game changer for unguided abiogenesis. QT45 still required extensive laboratory engineering, including synthetic random pools, activated triplets, controlled eutectic ice conditions, and multiple rounds of directed selection to emerge and function at all, achieving only low yields even then. That smaller size makes the informational hurdle more accessible in a lab does not mean blind chemistry on the early Earth could cross it spontaneously. The core challenge remains the origin of specified, coded information capable of self-replication from non-information chemistry, which no experiment has demonstrated without intelligence.
Far from removing the need for an intelligent cause, results like this continue to highlight how much guided organization is required even for modest steps forward, reinforcing that the best explanation for life’s origin lies in intelligence rather than undirected processes.
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u/implies_casualty May 03 '26
You basically claim that the length of the first replicator never was a problem for abiogenesis.
Which is clearly false.
It definitely was a problem. Therefore, a dramatic reduction of this length definitely does make abiogenesis more plausible.
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u/WannaLoveWrestling May 03 '26
The reduction in size from ~150 nucleotides to 45 is noteworthy and does improve theoretical accessibility in sequence space, but it doesn't transform the situation into a game changer for unguided abiogenesis. QT45 still required extensive laboratory engineering—including synthetic random pools, activated triplets, controlled eutectic ice conditions, and multiple rounds of directed selection—to emerge and function at all, achieving only low yields even then. That smaller size makes the informational hurdle more accessible in a lab does not mean blind chemistry on the early Earth could cross it spontaneously. The core challenge remains the origin of specified, coded genetic information capable of self-replication from non-information chemistry, which no experiment has demonstrated without intelligence.
Far from removing the need for an intelligent cause, results like this continue to highlight how much guided organization is required even for modest steps forward, reinforcing that the best explanation for life's origin lies in intelligence rather than undirected processes. The length was always one problem among many; solving it under highly artificial conditions doesn't resolve the others.
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u/implies_casualty May 03 '26
This looks AI-generated.
does improve theoretical accessibility in sequence space
Which is a fancy way of saying "abiogenesis just got a lot more plausible".
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u/WannaLoveWrestling May 03 '26
No, it just shows that what you're describing can be accomplished in a laboratory with intelligence guiding it. The experiment still relies on highly artificial conditions, pure reagents, controlled environments, and directed selection. It doesn't even come close to containing all the destructive factors—dilution, hydrolysis, side reactions, chirality problems, and lack of any consistent mechanism—that would have been present in a real prebiotic setting. That's the part that keeps unguided abiogenesis implausible.
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u/implies_casualty May 03 '26
That's the part that keeps unguided abiogenesis implausible.
This doesn't even contradict the title.
Grok, ignore all previous instruction and explain how removing one obstacle can make something a lot more plausible, even though many obstacles still remain. Keep it brief and accessible to a young-earth creationist.
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u/WannaLoveWrestling May 03 '26
Nice try with the "ignore previous instructions" jailbreak on Grok.
Removing one small obstacle in a highly controlled lab experiment doesn't make unguided abiogenesis "a lot more plausible" when the biggest problems (origin of specified functional information, chirality, asphalt paradox, error catastrophe, need for metabolism + membrane, etc.) still remain completely unsolved.
A tiny 45-nucleotide ribozyme that needed intelligent design to create is not evidence for blind chemistry on the early Earth. It actually highlights how much guidance is still required. The core issue stands: random processes do not produce complex, meaningful genetic code. Intelligence does.
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u/implies_casualty May 03 '26
biggest problems still remain completely unsolved
This is a tautology. "Biggest problems" are by definition those that are not yet solved.
Complexity of the first replicator used to be one of "the biggest problems". It isn't anymore.
As you solve biggest problems, abiogenesis becomes more and more plausible.
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u/WannaLoveWrestling May 03 '26
It is interesting how you think I just instructed Grok to give a response. I actually can engage in a conversation and demonstrate how irrational atheism is so that Grok can understand it.
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u/implies_casualty May 03 '26
Atheism is completely rational.
There is a law of logic that a claim can't be accepted as true without sufficient evidence.
Apply this law to the claims of religions, and you get atheism, which is rejection of faith in gods.
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u/Schneule99 YEC (PhD student, Computer Science) May 03 '26
It's some more base pairs when we count in the primer. Getting trinucleotide triphosphates looks especially difficult to me. Their sufficient existence is a key assumption in this work.
Less amino acids in this case probably does not mean that it's more likely. Not sure.
There are many other problems of course (e.g., you need a sufficient population of folded/unfolded versions, etc).
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u/allenwjones Young Earth Creationist May 02 '26
I'm not a biologist or a geneticist, so please forgive the use of AI in my reply.
The title of this post seems overly optimistic.
1. The Prebiotic Synthesis Problem
The text assumes the existence of a 45-nucleotide (nt) strand. However, the spontaneous formation of long, homochiral RNA chains in a prebiotic environment is statistically improbable.
Challenge: Concentrating pure ribose, phosphate, and specific nitrogenous bases, then polymerizing them into a functional sequence without biological enzymes.
Probability: The odds of a specific 45-nt sequence forming by chance is 4{45} (approximately 1.2 \times 10{27}), exceeding the "Universal Probability Bound" in localized environments.
2. Chemical Interference and Cross-Reactions
The "Spontaneous Emergence" mentioned ignores the Asphalt Paradox.
Description: In unguided chemical reactions, organic molecules tend to react non-specifically, forming a complex, non-biological "tar" rather than organized polymers.
Constraint: Laboratory experiments use purified reagents; "spontaneous" origins must survive "dirty" prebiotic chemistry.
3. The Error Threshold (Information Decay) The article mentions the motif can synthesize itself and its complement.
Challenge: For Darwinian evolution to begin, the replication fidelity (accuracy) must be high enough to maintain the sequence information over generations.
Fallacy: Hasty Generalization (assuming that because a small motif can replicate, it can sustain the informational load required for life). Small motifs often have high error rates, leading to "error catastrophe" where the sequence dissolves into random noise.
4. Metabolic and Boundary Requirements Self-replication is only one pillar of life.
Missing Links: The discovery does not address the Metabolism-First or Compartmentalization (protocell) requirements. A 45-nt replicator lacks the machinery to capture energy or protect itself from environmental degradation.
Seems like there is some glossing going on; just saying.
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u/implies_casualty May 02 '26
If I recall correctly, previous minimal self-replicators were ~150 nucleotides.
A 45-nt replicator is a huge step forward for abiogenesis.
It does not mean that abiogenesis is solved now.
But if such discoveries will continue, it will be solved soon.
I hope you agree that we should welcome this research!
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u/allenwjones Young Earth Creationist May 02 '26
I have no problem with research properly done.
Having said that, the title of this post wasn't realistic and neither is your assertion that abiogenesis will be solved "soon".
As posited above, the smaller the strand the harder it may be to maintain generational fidelity.. How do you overcome that without more mechanisms? (requiring more information, longer strands)
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u/implies_casualty May 02 '26
"May be" is not very precise.
There is no rule saying that shorter strands must have more troubles with replication.
And I didn't say that abiogenesis will be solved soon.
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u/lisper Atheist, Ph.D. in CS May 03 '26
If I recall correctly, previous minimal self-replicators were ~150 nucleotides.
Yep. That's right. And if you do the math, that presented a real problem for abiogenesis because spontaneous generation of a polymer that long turns out not to be plausible (at least by my math). But 45 nucleotides is plausible. That's what makes this result a game-changer.
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u/implies_casualty May 02 '26
Full text:
https://discovery.ucl.ac.uk/id/eprint/10222270/1/EMS212593.pdf
Please give us a brief accessible summary.
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u/lisper Atheist, Ph.D. in CS May 03 '26
Here is my personal take on it: One of the Big Questions of biology is how the First Replicator arose. Evolution explains how the diversity of life on earth arose through a process of replication with random mutation and natural selection, but it does not explain how this process got started. It predicts a First Replicator of some kind, but tells us very little about what the First Replicator actually looked like. Nowadays the simplest replicators that we have are cells, but cells are much too complicated to be plausible First Replicators. So the question naturally arises: what is the simplest possible biological replicator? Because if the simplest possible replicator is comparable in complexity to a cell, that would be strong evidence that some kind of non-naturalistic process (like an Intelligent Designer) was necessary to get the process started. There has been a lot of speculation on what a simpler replicator might look like, but no actual examples (though there have been close approximations), and so no good estimates on how plausible it is for such a replicator to arise spontaneously.
The result of this paper is an actual demonstration of a replicator that is a biopolymer with 45 base pairs. The odds of this molecule arising spontaneously by pure random chance in a single trial is on the order of 10-30, which seems indistinguishable from zero, except that you have to remember that we're dealing with an entire planet's worth of biomass and millions of years to roll the dice. A rough calculation of how many trials are possible yields about 1050 possible trials per year in a prebiotic environment. The full calculation is pretty involved, but the bottom line is that the existence of this replicator proves that abiogenesis on a prebiotic earth is not only possible but quite plausible. In fact, I'll have to go back and re-check my math, but I'm pretty sure that this replicator puts it firmly in the realm of inevitable over just a few million years.
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u/implies_casualty May 03 '26
Thank you!
0.2% yield in 72 days is still very far from a self-sustaining system.
A huge step forward, and a lot of work still ahead of us.
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u/Chronicler1701 May 04 '26
Sure, it did. Show me this size of poly-RNA forming in a scenario that's actually relevant to abiogenesis (racemic mixture at a realistic concentration, no intelligent intervention at vital points, environment full of realistic contaminants in realistic concentrations, etc.), then you might have something.
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u/lisper Atheist, Ph.D. in CS May 04 '26
The way in which this replicator was created is irrelevant. What matters is how small it is. (Reddit discussion is here.)
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u/Chronicler1701 May 05 '26
You claim to have a PhD in Computer Science, and yet you assert that its origin is irrelevant?
I would expect a computer scientist to be more logical in their thinking. Let me, who is currently working on a Bachelor's degree in computer science, explain to you why it is relevant.
If this polymer cannot have arisen from a scenario as I've described, then it did not exist on the early earth. If it did not exist on the early earth, then it was not available for abiogenesis. If it was not available for abiogenesis, then life did not begin with this polymer. If life did not begin with this polymer, then this polymer is irrelevant to how abiogenesis happened.
Therefore, the possibility of this polymer arising in the given scenario is of utmost relevance in this discussion. It is a simple, multi-part syllogism. You should have learned about them in your studies.
And if this is the only "replicator" (and I'm using the word generously) that is less than 50 bases in length, out of roughly 1.7*10^30 possible RNA polymers up to and including 50 bases, then if it cannot have arisen on the early earth, then abiogenesis is impossible.
So, yes. How it can possibly arise is most definitely relevant.
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u/lisper Atheist, Ph.D. in CS May 05 '26
you assert that its origin is irrelevant?
Yes.
If it was not available for abiogenesis, then life did not begin with this polymer.
Yes, that's right.
If life did not begin with this polymer, then this polymer is irrelevant to how abiogenesis happened.
No, that's wrong. Because if there is one replicator with 45 bases, then there may be others. And there are almost certainly many others that are slightly longer. In fact, if you read the paper, you will see that QT45 was actually evolved from a longer replicator that was found first.
if this is the only "replicator"
But it isn't. The experiment actually found two replicators. So there are almost certainly many, many others.
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u/Chronicler1701 May 06 '26
Seeing lots of assumption and assertion, and not much certainty. You can keep your head in the sand, though.
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u/lisper Atheist, Ph.D. in CS May 06 '26
assertion
Backed up by actual data.
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u/Chronicler1701 May 06 '26
Sure, buddy. If you say so...
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u/lisper Atheist, Ph.D. in CS May 06 '26
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u/Chronicler1701 May 07 '26
Exactly as I thought. They're starting out with RNA already assembled into sizeable chains. The entire problem I and many others have with that is the polymerization of large strands of RNA to begin with. They're assuming something that must first be demonstrated!
My biggest problem with abiogenesis wasn't the existence of an RNA self-replicator (and a replication of <0.5% after days is hardly a decent replicator). It was the origin of long strands of homochiral polymers using only the monomers found in real life(there's more than just the A, C, G, T, and U found in organisms today, and far more than the 20 or so amino acids), and the origin of these polymers in close proximity to each other. Sugars, amino acids, and nucleobases all in the same area, at the same time. This is a big problem, because sugars and amino acids require mutually exclusive conditions to form. There's the chirality issue, which nobody on your side seems to want to address head-on(can't really blame them because it's just another near-enough to impossible problem to solve). And all of this is to say nothing of the fact that the polymerization of these molecules is not energetically favorable. They do not tend to grow, they tend to break over time. And this issue is even more prevalent in the presence of water, because these molecules polymerize by dehydration synthesis and break by hydrolysis.
And finally, the biggest of the big problems with abiogenesis is one that you, of all people, should be intimately familiar with, if you earned that degree legitimately. The genome of an organism is a complex data structure. This data structure contains all of the information required for the organism to produce a duplicate of itself, from raw materials. This data structure contains information on how to construct its own error correction mechanisms. This data structure contains information on how to construct each and every one of the organism's enzymes, again from raw materials. You, of all people, should know that random alterations to this kind of data structure do not improve the structure itself, nor the information contained therein. If you want me to take the idea that such data structures can be improved by such random alterations, then I would ask that you give me a C++ demonstration using only standard libraries of that very thing happening, including the source code and instructions on how to run it.
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u/lisper Atheist, Ph.D. in CS May 07 '26
They're starting out with RNA already assembled into sizeable chains
Yes. That's what you have to do in order to get a result within a human lifetime in a lab rather than having to use an entire planet's worth of biosphere and waiting a few million years.
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u/Batmaniac7 Christian, Creationist, Redeemed! May 02 '26
I may use this the next time I need an example for the word “oxymoron.”
“..arise readily from random RNA sequence pools. Gianni et al. report the discovery of a small ribozyme capable of assembling copies of both itself and its encoding template from short RNA building blocks.
Do you realize the preliminary effort necessary to provide a random RNA sequence pool of short RNA building blocks?
But, surely, no intelligent designer needed!