View: List Claim type Research area Organism Taxon as written Decade Paper Complex structure of knobs and centromeric regions in maize chromosomes. 14 Show all 14 → Observation observed original result measured Claim · model-written summary
Maize knobs contain 180-bp repeats, TR1 repeats, or both.
Verbatim
e0 “knobs may be composed of either 180-bp or TR1, or both repeats ”
✓ located verbatim in the source · abstract, characters 1510–1572 t0 “maize ”
✓ located verbatim in the source · title, characters 54–59 Other claims from this paper (13) Observation observed original result measured Claim · model-written summary
Certain retrotransposable elements preferentially associate with knobs or centromeres.
retrotransposable elements e0 Verbatim
e0 “obvious preference for the integration/association of certain retrotransposable elements into knobs or centromere regions ”
✓ located verbatim in the source · abstract, characters 832–953 t0 “maize ”
✓ located verbatim in the source · title, characters 54–59 Other claims from this paper (13) Mechanism author interpretation original result measured Claim · model-written summary
Maize knobs may be considered megatransposable elements.
maize knob may be consider as megatransposable elements e0 knob polymorphism and complex structure e0 Verbatim
e0 “knob polymorphism and complex structure suggest that maize knob may be consider as megatransposable elements ”
✓ located verbatim in the source · abstract, characters 1773–1881 t0 “maize ”
✓ located verbatim in the source · title, characters 54–59 Other claims from this paper (13) Higher order repeat structures reflect diverging evolutionary paths in maize centromeres and knobs 10 Show all 10 → Observation observed original result measured Claim · model-written summary
Maize knobs exhibit a more structured HOR distribution than centromeres.
more structured HOR distribution e0 Verbatim
e0 “maize knobs exhibit a more structured HOR distribution ”
✓ located verbatim in the source · abstract, characters 1258–1312 Other claims from this paper (9) Observation observed original result measured Claim · model-written summary
Large maize knobs contain megabase-scale similarity blocks with repeated HOR patterns.
megabase-scale similarity blocks with repeated HOR patterns e0 Verbatim
t0 “maize ”
✓ located verbatim in the source · title, characters 71–76 e0 “Large knobs contain megabase-scale similarity blocks with repeated HOR patterns ”
✓ located verbatim in the source · abstract, characters 1314–1393 Other claims from this paper (9) Mechanism hypothesis original result measured Claim · model-written summary
The repeat units in knobs likely promote unequal crossing over, enabling rapid knob expansion.
rapid knob expansion e0 unequal crossing over e0 Verbatim
t0 “maize ”
✓ located verbatim in the source · title, characters 71–76 e0 “These repeat units likely promote unequal crossing over, enabling rapid knob expansion ”
✓ located verbatim in the source · abstract, characters 1395–1481 Other claims from this paper (9) Neocentromere-mediated Chromosome Movement in Maize 9 Show all 9 → Observation observed original result measured Claim · model-written summary
Neocentromeres are active from prometaphase through anaphase in maize meiosis.
neocentromeres are active e1 from prometaphase through anaphase e1 Verbatim
e0 “In maize, neocentromeres are induced by a gene or genes on Abnormal chromosome 10 (Ab10) which causes heterochromatic knobs to move poleward at meiotic anaphase ”
✓ located verbatim in the source · abstract, characters 83–243 e1 “we show that neocentromeres are active from prometaphase through anaphase ”
✓ located verbatim in the source · abstract, characters 592–665 Other claims from this paper (8) Mechanism author interpretation original result basis n/a Claim · model-written summary
Microtubule depolymerization is not required for neocentromere motility.
neocentromere motility e6 microtubule depolymerization is not required e6 Verbatim
e0 “In maize, neocentromeres are induced by a gene or genes on Abnormal chromosome 10 (Ab10) which causes heterochromatic knobs to move poleward at meiotic anaphase ”
✓ located verbatim in the source · abstract, characters 83–243 e6 “These data suggest that microtubule depolymerization is not required for neocentromere motility ”
✓ located verbatim in the source · abstract, characters 1241–1336 Other claims from this paper (8) Observation observed original result measured Claim · model-written summary
Unlike kinetochores, neocentromeres associate laterally with microtubules.
neocentromeres associate laterally with microtubules e5 Verbatim
e0 “In maize, neocentromeres are induced by a gene or genes on Abnormal chromosome 10 (Ab10) which causes heterochromatic knobs to move poleward at meiotic anaphase ”
✓ located verbatim in the source · abstract, characters 83–243 e5 “unlike kinetochores, neocentromeres associate laterally with microtubules and that neocentromere movement is correlated with knob size ”
✓ located verbatim in the source · abstract, characters 1105–1239 Other claims from this paper (8) Molecular Characterization of a Family of Tandemly Repeated DNA Sequences, TR-1, in Heterochromatic Knobs of Maize and Its Relatives 9 Show all 9 → Observation observed original result measured Claim · model-written summary
Fluorescence in situ hybridization localized the B repeat to the B centromere.
B centromere e3 Verbatim
e2 “we isolated 59 clones belonging to the TR-1 family from maize and teosinte ”
✓ located verbatim in the source · abstract, characters 103–177 e3 “Fluorescence in situ hybridization localized the B repeat to the B centromere ”
✓ located verbatim in the source · abstract, characters 1397–1474 Other claims from this paper (8) Mechanism hypothesis original result basis n/a Claim · model-written summary
B' may have originated from B through lateral amplification accompanied by base-pair changes (author interpretation).
originate from B through lateral amplification accompanied by base-pair changes e4 Verbatim
e2 “we isolated 59 clones belonging to the TR-1 family from maize and teosinte ”
✓ located verbatim in the source · abstract, characters 103–177 e4 “B' may originate from B through lateral amplification accompanied by base-pair changes ”
✓ located verbatim in the source · abstract, characters 671–757 Other claims from this paper (8) Mechanism hypothesis original result basis n/a Claim · model-written summary
The B component may have evolved from the 180-bp knob repeat through mutations during evolution (author interpretation).
as a result of mutations during evolution e3 Verbatim
e2 “we isolated 59 clones belonging to the TR-1 family from maize and teosinte ”
✓ located verbatim in the source · abstract, characters 103–177 e3 “the B component may evolve from the 180-bp knob repeat as a result of mutations during evolution ”
✓ located verbatim in the source · abstract, characters 569–665 Other claims from this paper (8) Studies on the Leaf Nodules V The Formation of Knobs by the Effect of Antibiotics on theArdisia crispa andA. punctata 9 Show all 9 → Observation observed original result negative measured Claim · model-written summary
A. crispa knobs were larger than those of A. punctata.
size of the knobs e0 Not reported Taxon
Verbatim
e0 “the size of the knobs of the former plant is larger ”
✓ located verbatim in the source · abstract, characters 718–769 Other claims from this paper (8) Intervention effect observed original result no effect measured Claim · model-written summary
A. japonica did not form knobs after antibiotic or heat treatment.
antibiotics or by heat treatment e0 knobs are never formed e0 Not reported Comparator Direction
Verbatim
e0 “theA. japonica which is closely affined to them and non-leaf-nodular plant, knobs are never formed either by antibiotics or by heat treatment ”
✓ located verbatim in the source · abstract, characters 336–477 Other claims from this paper (8) Observation observed original result measured Claim · model-written summary
Knobs contained epidermis, cortex and central cylinder, with no meristem or leaf-nodule-bacteria detected.
epidermis, cortex and central cylinder, and no meristem and leaf-nodule-bacteria e0 Not reported Taxon Direction
Verbatim
e0 “The knobs are formed of epidermis, cortex and central cylinder, and no meristem and leaf-nodule-bacteria are recognized in any part of them by microscope ”
✓ located verbatim in the source · abstract, characters 773–926 Other claims from this paper (8) On sand knobs vegetation in Verhulitsa-Lutepää region, South-Eastern Estonia 8 Show all 8 → Observation observed original result measured Claim · model-written summary
39 plant communities of Estonian inland sand knobs were described and classified into 7 syntaxonomic units.
classified into 7 syntaxonomic units e1 39 plant communities e1 South-Eastern Estonia e0 Verbatim
e0 “Vegetation of inland sand knobs in South-Eastern Estonia was studied ”
✓ located verbatim in the source · abstract, characters 51–119 e1 “39 plant communities were described and thereafter classified into 7 syntaxonomic units ”
✓ located verbatim in the source · abstract, characters 121–208 Other claims from this paper (7) Recommendation author interpretation original result basis n/a Claim · model-written summary
To maintain the features of Estonian inland sand knob plant communities, they must be kept open and the dense bottom layer vegetation removed in some places.
Estonian inland sand knobs plant communities e7 dense bottom layer vegetation must be removed e7 Verbatim
e7 “To maintain the peculiar features of Estonian inland sand knobs plant communities they must be kept open and in some places also the dense bottom layer vegetation must be removed ”
✓ located verbatim in the source · abstract, characters 1593–1771 Other claims from this paper (7) Observation observed original result measured Claim · model-written summary
Microcoenoses of any type are confined to only one type of plant community.
confined to only one type of communities e6 Verbatim
e1 “39 plant communities were described and thereafter classified into 7 syntaxonomic units ”
✓ located verbatim in the source · abstract, characters 121–208 e6 “microcoenoses of any type are confined to only one type of communities ”
✓ located verbatim in the source · abstract, characters 1521–1591 Other claims from this paper (7) A knob-associated tandem repeat in maize capable of forming fold-back DNA segments: Are chromosome knobs megatransposons? 7 Show all 7 → Observation observed original result measured Claim · model-written summary
TR-1 elements occur in knobs on other maize chromosomes in different proportions relative to 180-bp repeats.
different proportions relative to the previously described 180-bp repeats e0 Verbatim
e0 “TR-1 elements are also present in cytologically detectable knobs on other maize chromosomes in different proportions relative to the previously described 180-bp repeats ”
✓ located verbatim in the source · abstract, characters 195–363 Other claims from this paper (6) Observation observed original result measured Claim · model-written summary
TR-1 shares two short homology segments with the 180-bp repeat.
two short segments of homology e0 Verbatim
e0 “The TR-1 repeat shares two short segments of homology with the 180-bp repeat ”
✓ located verbatim in the source · abstract, characters 1049–1125 e1 “other maize chromosomes ”
✓ located verbatim in the source · abstract, characters 263–286 Other claims from this paper (6) Observation observed original result measured Claim · model-written summary
At least one chromosome 4 knob is predominantly TR-1 repeat.
composed predominantly of the TR-1 repeat e0 Verbatim
e0 “At least one knob on chromosome 4 is composed predominantly of the TR-1 repeat ”
✓ located verbatim in the source · abstract, characters 365–443 e1 “other maize chromosomes ”
✓ located verbatim in the source · abstract, characters 263–286 Other claims from this paper (6) Meiotic Drive of Chromosomal Knobs Reshaped the Maize Genome 7 Show all 7 → Association author interpretation original result simulated Claim · model-written summary
Simulations suggested knobs may be deleterious without Ab10.
knobs might be deleterious e0 Not reported Direction
Verbatim
e0 “Simulations were used to illustrate the dynamics of this meiotic drive model and suggest knobs might be deleterious in the absence of Ab10. ”
✓ located verbatim in the source · abstract, characters 582–721 t0 “Maize ”
✓ located verbatim in the source · title, characters 48–53 Other claims from this paper (6) Mechanism author interpretation original result measured Claim · model-written summary
Transposition may influence knob evolution.
evolution of knobs e0 Not reported Direction
Verbatim
e0 “environmental factors and transposition may play a role in the evolution of knobs . ”
✓ located verbatim in the source · abstract, characters 1122–1204 t0 “Maize ”
✓ located verbatim in the source · title, characters 48–53 Other claims from this paper (6) Mechanism author interpretation original result measured Claim · model-written summary
Environmental factors may influence knob evolution.
evolution of knobs e0 environmental factors e0 Not reported Direction
Verbatim
e0 “environmental factors and transposition may play a role in the evolution of knobs . ”
✓ located verbatim in the source · abstract, characters 1122–1204 t0 “Maize ”
✓ located verbatim in the source · title, characters 48–53 Other claims from this paper (6) PRINS-Labeled Knobs Are Not Associated with Increased Chromosomal Stickiness in the Maize st1 Mutant 7 Show all 7 → Observation observed original result negative measured Claim · model-written summary
Sticky chromosomes show abnormal separation at anaphase.
abnormal chromosome separation at anaphase e0 Verbatim
e0 “These sticky chromosomes result in abnormal chromosome separation at anaphase ”
✓ located verbatim in the source · abstract, characters 130–207 t0 “PRINS-Labeled Knobs Are Not Associated with Increased Chromosomal Stickiness in the Maize st1 Mutant ”
✓ located verbatim in the source · title, characters 0–100 Other claims from this paper (6) Method / resource observed original result measured Claim · model-written summary
PRINS-labeled regions corresponded to reported C bands.
chromosomal regions labeled by PRINS e0 reported C bands e0 Verbatim
e0 “The chromosomal regions labeled by PRINS corresponded to the reported C bands found in these lines ”
✓ located verbatim in the source · abstract, characters 537–635 t0 “PRINS-Labeled Knobs Are Not Associated with Increased Chromosomal Stickiness in the Maize st1 Mutant ”
✓ located verbatim in the source · title, characters 0–100 Other claims from this paper (6) Observation observed original result negative measured Claim · model-written summary
The st1 mutant had more abnormal anaphase figures.
abnormal anaphase figures e0 Verbatim
e0 “The increase in abnormal anaphase figures in the st1 mutant was not accompanied by an increase in association of knob DNA with abnormal anaphases ”
✓ located verbatim in the source · abstract, characters 819–964 t0 “PRINS-Labeled Knobs Are Not Associated with Increased Chromosomal Stickiness in the Maize st1 Mutant ”
✓ located verbatim in the source · title, characters 0–100 Other claims from this paper (6) Swamp Forests on High Terrace Deposits in the Bluegrass and Knobs Regions of Kentucky 6 Show all 6 → Method / resource observed original result measured Claim · model-written summary
Quercus bicolor swamp forest sites were mapped in Kentucky Bluegrass and Knobs regions.
distribution of swamp forest sites e0 Bluegrass and Knobs regions of Kentucky e0 Not reported Comparator Value
Verbatim
e0 “The distribution of swamp forest sites as indicated by Quercus bicolor is mapped for the Bluegrass and Knobs regions of Kentucky. ”
✓ located verbatim in the source · abstract, characters 0–129 Other claims from this paper (5) Observation observed original result measured Claim · model-written summary
Records extended the known range of Q. bicolor .
extend their known ranges e0 Verbatim
e0 “Records of Q. bicolor , Q. michauxii and Habenaria spp. from these previously little described forests extend their known ranges. ”
✓ located verbatim in the source · abstract, characters 371–499 Other claims from this paper (5) Observation observed original result measured Claim · model-written summary
Records extended the known range of Q. michauxii .
extend their known ranges e0 Verbatim
e0 “Records of Q. bicolor , Q. michauxii and Habenaria spp. from these previously little described forests extend their known ranges. ”
✓ located verbatim in the source · abstract, characters 371–499 Other claims from this paper (5) Lexical search (BM25). All words must match; if nothing does, any word. Organism names also match every spelling of the same organism. No semantic search yet.
Zea mays
Quercus bicolor
Quercus michauxii