The larger catalogue for the whole series is on the parent page, the origin of life: the literature. This page lists only what this article uses or deliberately does not use.
Sources cited
| Source | What it is | Access | Direction |
|---|---|---|---|
| Joyce et al. 1984, Nature 310:602 | Wrong-handed monomers act as chain terminators. Orgel's laboratory. | Abstract verbatim from Europe PMC | supports |
| Lee, Granja, Martinez, Severin & Ghadiri 1996, Nature 382:525 | A 32-residue peptide that templates its own synthesis, in water. Parabolic growth, so no Darwinian competition. | Abstract verbatim from Europe PMC; body not read | complicates |
| Musgrave 1998, TalkOrigins | The canonical sceptical reply to probability arguments, built on the Ghadiri peptide. | Page fetched and read | undercuts the probability arguments |
| Orgel 2004, Crit Rev Biochem Mol Biol 39:99 | The review the "near miracle" quote is wrongly attributed to. Four strong first-person statements of pessimism, in service of an argument for a pre-RNA polymer. | Opened in full, all 26 pages | supports, with a large qualification |
| Shapiro 2007, Sci Am 296(6):46 | The chemist's-hand attack on RNA-first, the golfer analogy, the drying-lagoon calculation. Argues for metabolism first. | Full print view read | supports RNA-first criticism only |
| Lincoln & Joyce 2009, Science 323:1229 | Cross-replicating ligase pair, exponential and indefinite, from four pre-made substrates. | Abstract verbatim | undercuts, then dead-ends |
| Bentin 2011, Artif DNA 2:40 | Commentary giving tC19 and tC19Z numbers, and the clean statement that 95 nt "would still fall short of copying their own gene of 187 nt." | Opened in full (CC BY-NC) | supports |
| Attwater, Wochner & Holliger 2013, Nat Chem 5:1011 | First ribozyme to make an RNA longer than itself, 206 nt, on a favourable repeat template. | Opened in full | undercuts the crude claim |
| Robertson & Joyce 2012, CSH Perspect Biol 4:a003608 | The open-access descendant of the Joyce and Orgel chapter. Where the "near miracle" sentence actually lives, and its "Time will tell" ending. | Opened in full; passage verified on rendered p. 15 | complicates |
| Robertson & Joyce 2014, Chem Biol 21:238 | The cross-replicators at a five-minute doubling time. | Abstract verbatim | undercuts |
| Horning & Joyce 2016, PNAS 113:9786 | RNA-catalysed exponential amplification, more than 10,000-fold, on short templates. | Opened in full | undercuts |
| Attwater et al. 2018, eLife 7:e35255 | Triplet substrates; the ribozyme makes its own catalytic domain in five pieces, with ~25% of joins supplied pre-ligated. Also the Methods showing the triplets come from T7 RNA polymerase. | Opened in full (CC BY) | complicates |
| Joyce & Szostak 2018, CSH Perspect Biol 10:a034801 | The field's own statement of cross-inhibition, strand separation and the error threshold, with the formula worked. | Opened in full | supports |
| Tjhung, Shokhirev, Horning & Joyce 2020, PNAS 117:2906 | A polymerase makes its own ancestor; the copies are ~8,000-fold less active; 83% fidelity on the hardest fragment; the yield-versus-activity reversal; the "carefully curated substrates" admission. | Opened in full | supports |
| Papastavrou, Horning & Joyce 2024, PNAS 121:e2321592121 | Eight rounds of RNA-catalysed Darwinian evolution, with fitter variants. Also the 97-98% fidelity target called attainable. | Opened in full (CC BY-NC) | undercuts, and calibrates |
| Attwater et al. 2025, Nat Chem 17:1129 | Exponential one-pot replication of a 29-nt fragment of the ribozyme's own core, under pH and freeze-thaw cycling. | Opened in full (CC BY) | undercuts |
| Gianni et al. 2026, Science 391:1022 | QT45. Both own strands made, in separate reactions, at ~0.2% over 72 days and 94.1% fidelity. Includes the paradox statement and the quasispecies model. Post-cutoff. | Author manuscript opened in full (CC BY) | undercuts, decisively, then narrows |
| Urquhart 2026, Chemistry World, 16 Feb | On-the-record quotations from Gianni and from David Lilley. Post-cutoff. | Opened in full | trade press; quotations only |
| Kent et al. 2026, PNAS | A polymerase ribozyme repairs mismatches and cyclic phosphates under saturating pyrophosphate. Post-cutoff. | Opened | undercuts |
| Kahana 2026, Life 16:837 | The one substantial published critique of the polymerase-ribozyme programme. Argues for lipid autocatalytic networks instead. Post-cutoff. | Opened in full (CC BY) | supports the criticism, from inside naturalism |
| Le Vay & Mutschler 2019, Emerg Top Life Sci 3:469 | "it has not yet been possible to demonstrate robust and continuous RNA self-replication from a realistic feedstock." Cited in Gianni's own reference list. | Opened in full (CC BY) | supports |
| Song et al. 2021, Angew Chem 60:2952 | Prebiotically plausible activation compatible with ribozyme ligation, and the statement that "credible non-enzymatic pathways for high-yielding 5′-triphosphate activation of RNA are currently missing." | Opened in full (CC BY) | complicates |
| Kun, Santos & Szathmáry 2005, Nat Genet 37:1008 | The phenotypic error threshold on real mutagenised ribozymes rises above 7,000 nt at 0.999 fidelity, and still needs a tenfold accuracy improvement. | Abstract verbatim from Europe PMC | complicates |
| Jia et al. 2017 retraction, Nat Chem 9:1286 | The strand-separation result that did not reproduce, retracted with an unusually detailed notice. | Full notice read via PMC | complicates |
| Vázquez-Salazar 2026, Life 16:240 | "the emergence of functional sequence information… remains a central open problem." Post-cutoff. | Abstract verbatim | supports |
Attwater, Wochner, Pinheiro, Coulson & Holliger 2010, Nat Commun 1:76 (attwater-2010) |
The R18 polymerase in ice and in solution: half-life < 52 h at 17 °C with high Mg2+, > 16 days at −7 °C in ice; activity at room temperature stops after a few days; ice relieves "prebiotically implausible substrate concentrations." | Opened in full (bronze OA PDF from nature.com, saved to the library); p. 3 right column and p. 1 abstract | complicates: makes ice workable and shows why it is needed |
Benner 2014, OLEB 44:339 (benner-2014) |
Five paradoxes from a naturalist prebiotic chemist. The water paradox (p. 342) and the probability paradox (pp. 342-343) bear on the RNA world; his p. 343 expectation that they will be resolved travels with them. | Opened in full (library PDF); pages anchored on running heads | supports the criticism, from inside naturalism |
Meyer 2009, Signature in the Cell, ch. 14 (meyer-2009) |
The design movement's main treatment of the RNA world: five problems (p. 300), the 2009 size expectation of 189-300 nt or impossibility (pp. 313-314), the rarity argument (p. 315), the translation step (pp. 316-317), and the experimenter-as-replicator argument (p. 320). | Read through bin/iapdsearch.py on signatureincelld0000meye (printdisabled; printed page = leaf − 12, anchored on running heads at leaves 325, 326, 330 and 333); not stored |
mixed: the size expectation has failed, the rarity argument is weak for RNA, the experimenter point stands |
Axe 2004, J Mol Biol 341:1295 (axe-2004) |
Protein rarity: "as low as 1 in 10^77" for a specific function, the high end of a range. Used only as a comparison with QT45's 9.5 × 10^-17. | Library PDF; abstract p. 1295 (the text layer drops the superscript) | undercuts the transfer of protein rarity arguments to RNA |
Tour 2022, Inference 6(4) (tour-2022) |
Tour's list of RNA-world failures: RNA "decomposes rapidly, even at 0°C" (sourced to a Merck handling page) and no RNA has duplicated "more than 7% of themselves" (sourced to 2001 and 2007 papers). | Library HTML and text, read in full | the 7% claim was stale in 2022 and is false since 2026; the instability claim holds for warm water only |
Futerman 2022, Inference 7(1) (futerman-2022) |
The one letter printed in reply to Tour 2022; it agrees with him. Tour's 2017 open letter thanks Futerman. | Library HTML and text | supports Tour, from a biochemist who had helped him |
Considered and not used
- Eigen 1971, Naturwissenschaften 58:465. The origin of the error threshold. Paywalled, no free copy found, not opened. The formula is taken from Joyce and Szostak 2018, who state it explicitly, and the article says so.
- Wochner et al. 2011, Science 332:209. The tC19Z paper. Not opened; its numbers reach this article only through Bentin's commentary. A live discrepancy is flagged rather than resolved: Bentin gives tC19Z an error rate of 8.8 × 10-3 (99.12% fidelity), which does not sit comfortably with Attwater 2013's 97.3% for tC19 and 98.3% for tC9Y. The article prints none of these as a general figure.
- Johnston et al. 2001, Science 292:1319, the original R18 polymerase. Not opened; the table row is taken from later papers that cite it.
- Ghadiri's 1996 paper body. Only the abstract was read. The gloss that a parabolic replicator cannot sustain Darwinian competition is the article's own, drawn from standard replication theory, and is marked as such in the footnote.
- Szathmáry's theoretical work on parabolic growth. Not consulted; the point above should be sourced properly before publication.
- The Joyce and Orgel chapter in The RNA World (1993, 1999, 2006). Purchase-walled at Cold Spring Harbor. The 2012 republication is quoted instead. Note the correction recorded in the parent article: the 1993 and 1999 book editions carry "(The authors subscribe to this latter view.)" immediately after the near-miracle sentence, and the 2012 reprint deletes it. So the 2012 text must not be used to establish what Joyce and Orgel believed, only what the sentence says.
- Shapiro 2006, Quarterly Review of Biology 81:105. The technical version of the 2007 piece. Abstract verified elsewhere in this project; body not opened. Nothing here depends on it.
- Li & Breaker 1999, JACS 121:5364, the standard kinetics of RNA backbone cleavage. Paywalled; the OpenAlex abstract gives no half-life figure. Not needed: Attwater 2010 measures a working polymerase's half-life under its own conditions, which is the number the article uses.
- A design-side reply to QT45. Searched on 27 October 2026, once generally and once restricted to evolutionnews.org, discovery.org, inference-review.com, creation.com, answersingenesis.org, icr.org and crev.info. None found. A Reddit r/Creation post is not a source. Unfound, not shown not to exist.
- Meyer's sequence-space figures on p. 315 (4^100 and 4^200 with their powers of ten). The OCR destroys the exponents, so the article quotes only his prose sentence and no number from that page.
- Deng, Yu & Blackmond 2024 and the peptide-ligation literature. Relevant to homochirality rather than here.
Open questions
- The QT45 result needs re-checking before publication. Re-checked on 27 October 2026 by web search: no correction, replication or experimental follow-up found; the authors deposited data on Dryad (doi:10.5061/dryad.6hdr7sr9n) and Gianni presented it at EPFL on 29 May 2026. This is the fastest-moving corner of the field and the article's central claim depends on it.
- Whether anyone has demonstrated a prebiotic route to triphosphate-activated trinucleotides. A database search returned nine records in total, all from one research lineage, which suggests there is no programme aimed at it.
- Bentin's tC19Z fidelity figure against Attwater's. Someone should open Science 332:209 and reconcile them.
- Whether the parabolic-growth limitation on template replicators has been stated in a citable primary source, rather than being folklore that everyone in the field knows.