https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as/Head
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as
http://www.nanopub.org/nschema#hasAssertion
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as/assertion
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as
http://www.nanopub.org/nschema#hasProvenance
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as/provenance
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as
http://www.nanopub.org/nschema#hasPublicationInfo
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as/pubinfo
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.nanopub.org/nschema#Nanopublication
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as/assertion
https://w3id.org/delphi/resource/assessment/thompson1917-ch04-13--claim-test
http://purl.org/dc/terms/description
Fetched the CCDB statistics CSV for each of the four plant major groups (69,948 species rows; median parsed n per species) and parsed the ACC data table embedded in its download page (12,221 animal records; haploid N where given, else 2N/2). Collapsed to one median value per species and per genus, then computed the fractions of taxa with n < 6, 6 <= n <= 16 and n > 16 for plants and animals at both resolutions, plus breakdowns by plant major group and animal phylum and a histogram (derived/histograms.csv).
https://w3id.org/delphi/resource/assessment/thompson1917-ch04-13--claim-test
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
https://w3id.org/delphi/ontology/Assessment
https://w3id.org/delphi/resource/assessment/thompson1917-ch04-13--claim-test
http://www.w3.org/2000/01/rdf-schema#comment
Measured: 0.4119205298013245 fraction of animal genera with haploid n > 16 (plant genera: 0.320); fraction with n < 6: animals 0.080, plants 0.011 (n = 13699, database census; genus-level n = 8414 plant and 5285 animal genera, species-level n = 64926 and 12221). Interpretation: Thompson's 'germ-nuclei' chromosome number is the gametic number n (half the somatic 2n), which both databases provide or allow (CCDB parses counts to gametophytic n; ACC lists N or 2N). 'Few' and 'fewer still' are read as tail fractions of at most 10%, with the upper tail no larger than the lower. The claim is about organisms generally, so species (or genera) are the units, each counted once, with no phylogenetic weighting; the species-level figures are reported alongside the primary genus-level ones. Databases are biased toward studied taxa (crops, insects, vertebrates), which is noted but not corrected beyond the genus-level aggregation.
https://w3id.org/delphi/resource/assessment/thompson1917-ch04-13--claim-test
http://www.w3.org/2000/01/rdf-schema#label
Claim test of thompson1917-ch04-13: refutes, confidence 0.9
https://w3id.org/delphi/resource/assessment/thompson1917-ch04-13--claim-test
http://www.w3.org/2000/01/rdf-schema#seeAlso
https://github.com/fractastical/delphisci/blob/bf2af6ee0a84e23ffa6414ad7a0a50a8c276506e/test-data/claim-tests/thompson-growth-form/thompson1917-ch04-13/result.json
https://w3id.org/delphi/resource/assessment/thompson1917-ch04-13--claim-test
http://www.w3.org/ns/prov#wasAttributedTo
https://w3id.org/delphi/resource/agent/delphisci-claim-tester-claude-fable-5-1
https://w3id.org/delphi/resource/assessment/thompson1917-ch04-13--claim-test
https://w3id.org/delphi/ontology/admissibleDatasets
Planned datasets: ccdb-statistics-by-major-group, acc-animal-chromosome-counts
https://w3id.org/delphi/resource/assessment/thompson1917-ch04-13--claim-test
https://w3id.org/delphi/ontology/assessmentType
claim-test/0.1.0
https://w3id.org/delphi/resource/assessment/thompson1917-ch04-13--claim-test
https://w3id.org/delphi/ontology/dataKind
biological
https://w3id.org/delphi/resource/assessment/thompson1917-ch04-13--claim-test
https://w3id.org/delphi/ontology/disconfirmingObservation
Refutes if at genus level f_high >= 0.25 in either kingdom (more than a quarter of genera above 16 is not 'fewer still'), or if f_high > f_low in both kingdoms (the upper tail is the larger tail, inverting the claim). Mixed otherwise (e.g. one kingdom satisfies the bounds and the other does not, without reaching the refutation thresholds).
https://w3id.org/delphi/resource/assessment/thompson1917-ch04-13--claim-test
https://w3id.org/delphi/ontology/evidenceAgainst
ACC records with non-numeric or range entries for 2N and N were dropped; odd 2N values (XO systems) give half-integer n, which does not affect the 6-16 binning.
https://w3id.org/delphi/resource/assessment/thompson1917-ch04-13--claim-test
https://w3id.org/delphi/ontology/evidenceAgainst
Both databases over-represent studied taxa (crops, insects, vertebrates) and plants are counted as gametophytic numbers including polyploids (hexaploid wheat is n = 21). Even taking the most favourable subsets (gymnosperms 5.8% > 16; bryophytes 11%), ferns (96% > 16), vertebrates (74%) and molluscs (60%) leave the general claim refuted.
https://w3id.org/delphi/resource/assessment/thompson1917-ch04-13--claim-test
https://w3id.org/delphi/ontology/evidenceAgainst
The lower bound holds (only 1.1% of plant genera and 8.0% of animal genera have n < 6) and the modal haploid number (9-13) sits inside Thompson's 6-16 window, so the claim is half right; what fails is the upper bound: 32% of plant genera and 41% of animal genera have n > 16, so the upper tail is roughly 30 and 5 times larger than the lower tail, the reverse of 'fewer still'.
https://w3id.org/delphi/resource/assessment/thompson1917-ch04-13--claim-test
https://w3id.org/delphi/ontology/evidenceAgainst
Thompson wrote in 1917 from a handful of counted species; the finding reflects a century of counting rather than an error in his reading of the data available to him.
https://w3id.org/delphi/resource/assessment/thompson1917-ch04-13--claim-test
https://w3id.org/delphi/ontology/expectedObservation
Pre-registered. Plants: species-level gametic numbers from the Chromosome Counts Database (CCDB) statistics service for all four major groups (Angiosperms, Gymnosperms, Pteridophytes, Bryophytes), using each species' median parsed n. Animals: the Animal Chromosome Count Database (ACC) table (haploid N where given, else 2N/2), one median value per species. For each kingdom compute f_low = fraction of taxa with n < 6, f_mid = fraction with 6 <= n <= 16, f_high = fraction with n > 16, at two resolutions: species level, and genus level (median of species values per genus, the primary resolution, to damp sampling bias toward well-studied genera). Supports if at genus level, in both kingdoms, f_low <= 0.10 and f_high <= 0.10 and f_high <= f_low.
https://w3id.org/delphi/resource/assessment/thompson1917-ch04-13--claim-test
https://w3id.org/delphi/ontology/failCriterion
Refutes if at genus level f_high >= 0.25 in either kingdom (more than a quarter of genera above 16 is not 'fewer still'), or if f_high > f_low in both kingdoms (the upper tail is the larger tail, inverting the claim). Mixed otherwise (e.g. one kingdom satisfies the bounds and the other does not, without reaching the refutation thresholds).
https://w3id.org/delphi/resource/assessment/thompson1917-ch04-13--claim-test
https://w3id.org/delphi/ontology/hasConfidence
0.9
https://w3id.org/delphi/resource/assessment/thompson1917-ch04-13--claim-test
https://w3id.org/delphi/ontology/hasEvidence
https://w3id.org/delphi/resource/evidence/thompson1917-ch04-13--claim-test--dataset-1
https://w3id.org/delphi/resource/assessment/thompson1917-ch04-13--claim-test
https://w3id.org/delphi/ontology/hasEvidence
https://w3id.org/delphi/resource/evidence/thompson1917-ch04-13--claim-test--dataset-2
https://w3id.org/delphi/resource/assessment/thompson1917-ch04-13--claim-test
https://w3id.org/delphi/ontology/hasVerdict
refutes
https://w3id.org/delphi/resource/assessment/thompson1917-ch04-13--claim-test
https://w3id.org/delphi/ontology/hypothesis
Across plant and animal species, the gametic (haploid) chromosome number n lies mostly between 6 and 16: the fraction of taxa with n < 6 is small and the fraction with n > 16 is smaller still.
https://w3id.org/delphi/resource/assessment/thompson1917-ch04-13--claim-test
https://w3id.org/delphi/ontology/inferenceMethod
Fetched the CCDB statistics CSV for each of the four plant major groups (69,948 species rows; median parsed n per species) and parsed the ACC data table embedded in its download page (12,221 animal records; haploid N where given, else 2N/2). Collapsed to one median value per species and per genus, then computed the fractions of taxa with n < 6, 6 <= n <= 16 and n > 16 for plants and animals at both resolutions, plus breakdowns by plant major group and animal phylum and a histogram (derived/histograms.csv).
https://w3id.org/delphi/resource/assessment/thompson1917-ch04-13--claim-test
https://w3id.org/delphi/ontology/passCriterion
Pre-registered. Plants: species-level gametic numbers from the Chromosome Counts Database (CCDB) statistics service for all four major groups (Angiosperms, Gymnosperms, Pteridophytes, Bryophytes), using each species' median parsed n. Animals: the Animal Chromosome Count Database (ACC) table (haploid N where given, else 2N/2), one median value per species. For each kingdom compute f_low = fraction of taxa with n < 6, f_mid = fraction with 6 <= n <= 16, f_high = fraction with n > 16, at two resolutions: species level, and genus level (median of species values per genus, the primary resolution, to damp sampling bias toward well-studied genera). Supports if at genus level, in both kingdoms, f_low <= 0.10 and f_high <= 0.10 and f_high <= f_low.
https://w3id.org/delphi/resource/assessment/thompson1917-ch04-13--claim-test
https://w3id.org/delphi/ontology/preregistered
false
https://w3id.org/delphi/resource/claim/thompson1917-ch04-13
https://w3id.org/delphi/ontology/hasAssessment
https://w3id.org/delphi/resource/assessment/thompson1917-ch04-13--claim-test
https://w3id.org/delphi/resource/evidence/thompson1917-ch04-13--claim-test--dataset-1
http://purl.org/dc/terms/description
median parsed gametophytic chromosome number n per plant species
https://w3id.org/delphi/resource/evidence/thompson1917-ch04-13--claim-test--dataset-1
http://purl.org/dc/terms/license
CC BY (CCDB terms; Rice et al. 2015)
https://w3id.org/delphi/resource/evidence/thompson1917-ch04-13--claim-test--dataset-1
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
https://w3id.org/delphi/ontology/EvidenceItem
https://w3id.org/delphi/resource/evidence/thompson1917-ch04-13--claim-test--dataset-1
http://www.w3.org/2000/01/rdf-schema#label
Dataset: Chromosome Counts Database (CCDB), species-level statistics for Angiosperms, Gymnosperms, Pteridophytes, Bryophytes
https://w3id.org/delphi/resource/evidence/thompson1917-ch04-13--claim-test--dataset-1
http://www.w3.org/ns/prov#atLocation
https://ccdb.tau.ac.il/services/statistics/?majorGroup=Angiosperms&format=csv
https://w3id.org/delphi/resource/evidence/thompson1917-ch04-13--claim-test--dataset-1
http://www.w3.org/ns/prov#atLocation
https://ccdb.tau.ac.il/services/statistics/?majorGroup=Bryophytes&format=csv
https://w3id.org/delphi/resource/evidence/thompson1917-ch04-13--claim-test--dataset-1
http://www.w3.org/ns/prov#atLocation
https://ccdb.tau.ac.il/services/statistics/?majorGroup=Gymnosperms&format=csv
https://w3id.org/delphi/resource/evidence/thompson1917-ch04-13--claim-test--dataset-1
http://www.w3.org/ns/prov#atLocation
https://ccdb.tau.ac.il/services/statistics/?majorGroup=Pteridophytes&format=csv
https://w3id.org/delphi/resource/evidence/thompson1917-ch04-13--claim-test--dataset-1
http://www.w3.org/ns/prov#wasDerivedFrom
https://ccdb.tau.ac.il/
https://w3id.org/delphi/resource/evidence/thompson1917-ch04-13--claim-test--dataset-1
https://w3id.org/delphi/ontology/hasChecksum
sha256:20d9ea1b469199d13c5e94dab13c4c09549bc7a796126f66c7a7f47c1b3c6028
https://w3id.org/delphi/resource/evidence/thompson1917-ch04-13--claim-test--dataset-1
https://w3id.org/delphi/ontology/hasChecksum
sha256:4711c9757315b9f8f791586a67211176ee677bba50a885bf21cd2a033630317d
https://w3id.org/delphi/resource/evidence/thompson1917-ch04-13--claim-test--dataset-1
https://w3id.org/delphi/ontology/hasChecksum
sha256:a6a6c7cce021a960711a00c52069687d55b9e82527eedbd2dc971b32cd2cb141
https://w3id.org/delphi/resource/evidence/thompson1917-ch04-13--claim-test--dataset-1
https://w3id.org/delphi/ontology/hasChecksum
sha256:c97736983a98cca240ddce9af3db1ecc5d020534a0dd84f2637f09105e1fdfc2
https://w3id.org/delphi/resource/evidence/thompson1917-ch04-13--claim-test--dataset-2
http://purl.org/dc/terms/description
2N and N per animal record, reduced to one median haploid value per species
https://w3id.org/delphi/resource/evidence/thompson1917-ch04-13--claim-test--dataset-2
http://purl.org/dc/terms/license
see repository LICENSE.md (github.com/cromanpa94/ACC)
https://w3id.org/delphi/resource/evidence/thompson1917-ch04-13--claim-test--dataset-2
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
https://w3id.org/delphi/ontology/EvidenceItem
https://w3id.org/delphi/resource/evidence/thompson1917-ch04-13--claim-test--dataset-2
http://www.w3.org/2000/01/rdf-schema#label
Dataset: Animal Chromosome Count Database (ACC; Roman-Palacios et al. 2021), table embedded in the download page
https://w3id.org/delphi/resource/evidence/thompson1917-ch04-13--claim-test--dataset-2
http://www.w3.org/ns/prov#atLocation
https://cromanpa94.github.io/ACC/category/download.html
https://w3id.org/delphi/resource/evidence/thompson1917-ch04-13--claim-test--dataset-2
http://www.w3.org/ns/prov#wasDerivedFrom
https://cromanpa94.github.io/ACC/
https://w3id.org/delphi/resource/evidence/thompson1917-ch04-13--claim-test--dataset-2
https://w3id.org/delphi/ontology/hasChecksum
sha256:0ccf654f2b4dfe655a9ce287c961163c722bd153dd35596526fa63c8f2854680
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as/provenance
https://w3id.org/delphi/resource/agent/delphisci-claim-tester-claude-fable-5-1
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#SoftwareAgent
https://w3id.org/delphi/resource/agent/delphisci-claim-tester-claude-fable-5-1
http://www.w3.org/2000/01/rdf-schema#label
delphisci claim tester (claude-fable-5.1; cursor/claim-tests-thompson-efb7)
https://w3id.org/delphi/resource/agent/delphisci-claim-tester-claude-fable-5-1
http://www.w3.org/ns/prov#actedOnBehalfOf
https://orcid.org/0009-0007-4948-9192
https://w3id.org/delphi/resource/agent/delphisci-claim-tester-claude-fable-5-1
https://w3id.org/delphi/ontology/usesModel
https://w3id.org/delphi/resource/model/claude-fable-5-1
https://w3id.org/delphi/resource/model/claude-fable-5-1
http://purl.org/dc/terms/identifier
claude-fable-5.1
https://w3id.org/delphi/resource/model/claude-fable-5-1
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
https://w3id.org/delphi/ontology/LanguageModel
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as/assertion
http://www.w3.org/ns/prov#wasAttributedTo
https://w3id.org/delphi/resource/agent/delphisci-claim-tester-claude-fable-5-1
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as/assertion
http://www.w3.org/ns/prov#wasDerivedFrom
https://github.com/fractastical/delphisci/blob/bf2af6ee0a84e23ffa6414ad7a0a50a8c276506e/test-data/claim-tests/thompson-growth-form/thompson1917-ch04-13/result.json
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as/assertion
http://www.w3.org/ns/prov#wasGeneratedBy
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as/test
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as/plan
http://www.w3.org/ns/prov#hadPlan
https://github.com/fractastical/delphisci/blob/bf2af6ee0a84e23ffa6414ad7a0a50a8c276506e/test-data/claim-tests/README.md
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as/test
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#Activity
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as/test
http://www.w3.org/ns/prov#qualifiedAssociation
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as/plan
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as/test
http://www.w3.org/ns/prov#wasAssociatedWith
https://w3id.org/delphi/resource/agent/delphisci-claim-tester-claude-fable-5-1
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as/pubinfo
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as
http://purl.org/dc/terms/created
2026-11-08T16:24:31.896Z
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as
http://purl.org/dc/terms/creator
https://orcid.org/0009-0007-4948-9192
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as
http://purl.org/dc/terms/license
https://creativecommons.org/licenses/by/4.0/
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as
http://purl.org/nanopub/x/hasNanopubType
https://w3id.org/delphi/ontology/Assessment
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as
http://purl.org/nanopub/x/introduces
https://w3id.org/delphi/resource/assessment/thompson1917-ch04-13--claim-test
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as
http://www.w3.org/2000/01/rdf-schema#label
Claim test of thompson1917-ch04-13: refutes, confidence 0.9
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as
https://w3id.org/delphi/ontology/domain
https://w3id.org/delphi/resource/domain/thompson-growth-form-1917
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as/sig
http://purl.org/nanopub/x/hasAlgorithm
RSA
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as/sig
http://purl.org/nanopub/x/hasPublicKey
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyFHtPB6p0mCjDozxlOY9CmO3nBm7Te3jFbXyLmM+G1tGe47Da0jYIbhkl9Oo1ZjxmCa3LCwlEqK8gj6hEIcL4ahW30JXh9HycfKVk1bugkzMEV15tJdTzAU3sGMFnbNsn43xY2LFLy45tApkRm5byEiM7oRRrooIdwoQKnP4Wzq/bfAoJ9qvW+MGkelyOTd1jbSt+KfmT7xKmDfWzAHddUlWwMX2QJOLxDaffOteTop6ZRgPiNmPJKA/S62Gac9XtSYT3oDkZ6/nr5cxxNLpOyxTf5FPISiCe11xYO/unYjY+mwnOfA8yhJIyx1l0O9I0vpOpn+E5TvyHJV+oSTrvwIDAQAB
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as/sig
http://purl.org/nanopub/x/hasSignature
bwSVrUtARyCkYQBoErOMK+h+u7gIMactxBUUikBpcZvrnB6eEEEup4QtAUedoQPNKRNJd/TxR9dtgO4ElgQctyk3J+cnJ86DyzkZ+XKvfrqeDu3xNFgXxG88/C/vXTynRbnFueGL4TAJyJN/l2nnEmvZ0PpDLtjQ04eM0iyn2to+mV9eId5o0zllUS7j0vAtMk9HXgnFwE8FzF9Ajn9MHs2SXLIN80Mo3n9YdmLj5YqkxjM5giXhcDby6f3rh+qsAuPYAs5eCEsZ0kiaHkEb2HtIjm4zCpuBvP1ew0tglxeDaSItWBRoEhaUxGJbRA6TIoOk9dPnNOuG2Cch8HcIVg==
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as/sig
http://purl.org/nanopub/x/hasSignatureTarget
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as
https://w3id.org/np/RA-_1OitvR3agVIVATcvUQpcAwTL4YFRQHhAbtItlm5as/sig
http://purl.org/nanopub/x/signedBy
https://orcid.org/0009-0007-4948-9192