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“knobs”

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Method / resourceobservedoriginal resultmeasured

Claim · model-written summary

Quercus bicolor swamp forest sites were mapped in Kentucky Bluegrass and Knobs regions.

Taxon: Quercus bicolorQuercus bicolore0
Outcome: distribution of swamp forest sitese0
Setting: Bluegrass and Knobs regions of Kentuckye0

Not reportedComparatorValue

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

Title

Swamp Forests on High Terrace Deposits in the Bluegrass and Knobs Regions of Kentucky

Leslie E. Meade; W. Meijer; Julian Campbell; et al. ScholarWorks - MoreheadState (Morehead State University) 1981

Other claims from this paper (5)

Observation Most swamp forest sites were on high terraces probably deposited by rivers ponded during glaciation.
Association Swamp forest composition varied with soil moisture and perhaps pH.
Observation Records extended the known range of Q. bicolor.
Observation Records extended the known range of Q. michauxii.
Observation Records extended the known range of Habenaria spp.

Method / resourceobservedoriginal resultmeasured

Claim · model-written summary

Knobs and heterochromatin were clearly visible by electron microscopy.

Taxon: maizeZea mayse1
Outcome: knobs and heterochromatin regionse0
Direction: clearly visiblee0
Comparator: light microscopee0

Verbatim

e0
“In the electron micrograph, the knobs and heterochromatin regions that have been used for karyotype analyses in the light microscope are clearly visible.”
✓ located verbatim in the source · abstract, characters 245–398

e1
“maize microsporocytes”
✓ located verbatim in the source · abstract, characters 108–129

Title

Transmission Electron Microscopic Study of Maize Pachytene Chromosome 6

Da-Leng Shen; Madeline Wu Stain Technology 1989. doi:10.3109/10520298909108048

Other claims from this paper (12)

Method / resource Mildly fixed maize microsporocytes frequently yielded cytoplasm-free chromosomes.
Method / resource The electron microscopic map can be aligned with the traditional cytological map.
Observation Numerous additional electron-dense bands were observed.
Observation Chromosome 6 was frequently associated with the nucleolus.
Observation Electron-dense regions appeared on each synapsing homolog at zygotene.
Observation During synapsis, homolog bands aligned into more conspicuous bands.
Observation Early pachytene banding was stable and reproducible.
Observation Chromosome 6 contained eight dark bands.
Observation Chromosome 6 contained 19 medium bands.
Observation Chromosome 6 contained 14 light bands.
Method / resource The bands may serve as regional gene mapping markers.
Observation Adjacent chromosome bands fused during later pachytene condensation.

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“knobs”

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