Luria–Delbrück experiment
E160513
The Luria–Delbrück experiment was a landmark 1943 study in bacterial genetics that demonstrated mutations arise randomly rather than in response to selective pressure, providing key evidence for the genetic basis of evolution.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Luria–Delbrück experiment canonical | 3 |
| Luria–Delbrück fluctuation test | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1402329 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
Target entity: Luria–Delbrück experiment Context triple: [Max Delbrück, knownFor, Luria–Delbrück experiment]
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A.
Koch's postulates
Koch's postulates are a set of criteria formulated in the late 19th century to establish a causal relationship between a specific microorganism and a particular disease.
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B.
Cockcroft–Walton experiment
The Cockcroft–Walton experiment was a pioneering 1932 nuclear physics experiment that achieved the first artificial disintegration of atomic nuclei using accelerated protons, confirming Einstein’s mass–energy equivalence.
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C.
Ives–Stilwell experiment
The Ives–Stilwell experiment is a classic test of special relativity that measured the relativistic Doppler effect to confirm time dilation for fast-moving ions.
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D.
Max Delbrück
Max Delbrück was a German-American biophysicist and Nobel Prize–winning pioneer of molecular genetics whose work on bacteriophages helped establish the foundations of modern molecular biology.
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E.
Trouton–Noble experiment
The Trouton–Noble experiment was an early 20th-century test of the luminiferous aether that searched for a torque on a charged capacitor in motion and, by finding no such effect, provided support for the emerging theory of special relativity.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Target entity: Luria–Delbrück experiment Target entity description: The Luria–Delbrück experiment was a landmark 1943 study in bacterial genetics that demonstrated mutations arise randomly rather than in response to selective pressure, providing key evidence for the genetic basis of evolution.
-
A.
Koch's postulates
Koch's postulates are a set of criteria formulated in the late 19th century to establish a causal relationship between a specific microorganism and a particular disease.
-
B.
Meitner–Hahn experiments
The Meitner–Hahn experiments were pioneering nuclear physics investigations in the 1930s that led to the discovery and explanation of nuclear fission in uranium.
-
C.
Cockcroft–Walton experiment
The Cockcroft–Walton experiment was a pioneering 1932 nuclear physics experiment that achieved the first artificial disintegration of atomic nuclei using accelerated protons, confirming Einstein’s mass–energy equivalence.
-
D.
Ives–Stilwell experiment
The Ives–Stilwell experiment is a classic test of special relativity that measured the relativistic Doppler effect to confirm time dilation for fast-moving ions.
-
E.
Max Delbrück
Max Delbrück was a German-American biophysicist and Nobel Prize–winning pioneer of molecular genetics whose work on bacteriophages helped establish the foundations of modern molecular biology.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
bacterial genetics experiment
ⓘ
fluctuation test ⓘ scientific experiment ⓘ |
| analyzed | distribution of resistant colonies across cultures ⓘ |
| contrastedWith | Poisson distribution expected for induced mutations ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| dataCharacteristic | jackpot events of early mutations ⓘ |
| demonstrated |
mutations are not induced by selective pressure
ⓘ
mutations arise randomly ⓘ pre‑adaptive mutations ⓘ |
| field |
bacterial genetics
ⓘ
evolutionary biology ⓘ microbiology ⓘ |
| hasAlternativeName |
Luria–Delbrück experiment
ⓘ
surface form:
Luria–Delbrück fluctuation test
fluctuation test ⓘ |
| hasAuthor |
Max Delbrück
ⓘ
Salvador Luria ⓘ |
| hasImpactOn |
antibiotic resistance studies
ⓘ
cancer mutation models ⓘ |
| influenced |
modern microbial genetics
ⓘ
population genetics of mutation ⓘ |
| keyConcept |
bacteriophage resistance
ⓘ
mutation rate estimation ⓘ spontaneous mutation ⓘ |
| mainSubject |
bacterial mutation
ⓘ
evolution ⓘ random mutation ⓘ |
| measured | number of phage‑resistant mutants per culture ⓘ |
| providedEvidenceFor |
Darwinian evolution
ⓘ
genetic basis of evolution ⓘ |
| publicationYear | 1943 ⓘ |
| publishedIn | Genetics ⓘ |
| recognizedAs |
classic experiment in genetics
ⓘ
landmark in molecular biology ⓘ |
| refuted | Lamarckian inheritance in bacteria ⓘ |
| relatedConcept |
Darwinism
ⓘ
surface form:
Darwinian selection
Lamarckism ⓘ
surface form:
Lamarckian adaptation
mutation-selection theory ⓘ |
| relatedTo | Salvador Luria Nobel Prize in Physiology or Medicine 1969 ⓘ |
| showed | high variance in number of resistant colonies ⓘ |
| supportsView | mutations occur before exposure to selective agent ⓘ |
| testedOrganism |
Escherichia coli
ⓘ
bacteriophage T1 ⓘ |
| timePeriod | World War II era ⓘ |
| usedControl | multiple independent bacterial cultures ⓘ |
| usedMethod |
fluctuation analysis
ⓘ
statistical distribution of mutants ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Subject: Luria–Delbrück experiment Description of subject: The Luria–Delbrück experiment was a landmark 1943 study in bacterial genetics that demonstrated mutations arise randomly rather than in response to selective pressure, providing key evidence for the genetic basis of evolution.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.