Claim · model-written summary
The three categories of block-type heterochromatin, corresponding to the three subgenera, differ in overall size, staining properties and location of the blocks.
- Outcome
- overall size, staining properties, and location of the blockse5
- Qualifier
- corresponding to the three subgenerae5
NicotianaNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Three categories of the block-type heterochromatin, corresponding to the three subgenera, were found to differ with respect to overall size, staining properties, and location of the blocks”
e2“A survey of the species of the genus Nicotiana was carried out”
Title
The Distribution of Heterochromatin in the Genus Nicotiana (Solanaceae)
James F. Merritt American Journal of Botany 1974. doi:10.2307/2441989
Other claims from this paper (5)
- Observation All examined Nicotiana species possess knob-type heterochromatin, defined as spherical densely staining regions of pachytene chromosomes.
- Observation Knob heterochromatin is most frequently located near the centromere, the nucleolar organizer and the chromosome ends.
- Observation Block-type heterochromatin was found in three species of section Paniculatae.
- Observation Block-type heterochromatin was found in three species of section Tomentosae.
- Observation Block-type heterochromatin was found in two species of section Noctiflorae.