Claim · model-written summary
Knobs and heterochromatin were clearly visible by electron microscopy.
Zea maysNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
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.”
e1“maize microsporocytes”
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.