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Mechanismauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

The B drive mechanism causes detrimental effects through adherence of heterochromatic knobs and A centromeres at the mitosis preceding sperm development

Taxon
maizeZea mayst0
Outcome
detrimental effectse5
Qualifier
adherence of heterochromatic knobs and apparently A centromeres at the mitosis preceding sperm developmente5

Verbatim

t0

“maize”

✓ located verbatim in the source · title, characters 67–72
e5

“Collectively, the results reveal two backgrounds in which the B drive mechanism is not confined to this chromosome causing detrimental effects by adherence of heterochromatic knobs and apparently A centromeres at the mitosis preceding sperm development”

✓ located verbatim in the source · abstract, characters 1148–1400

Title

Aneuploidy and ploidy variation conditioned by the B chromosome of maize

Patrice S. Albert; Hua Yang; Zhi Gao; et al. Heredity 2025. doi:10.1038/s41437-025-00764-y

Other claims from this paper (5)
Mechanismauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The observed TR-1 signals suggest knob duplication and an instability phenomenon in the maize genome.

Taxon
maizeZea mayse0
Outcome
knob duplication and an instability phenomenone3
Qualifier
in the maize genomee3

Verbatim

e0

“Knobs are blocks of heterochromatin present on chromosomes of maize (Zea mays L.)”

✓ located verbatim in the source · abstract, characters 10–91
e3

“suggesting knob duplication and an instability phenomenon in the maize genome”

✓ located verbatim in the source · abstract, characters 952–1029

Title

Heterozygosity of Knob-Associated Tandem Repeats and Knob Instability in Mitotic Chromosomes of Zea (Zea mays L. and Z. diploperennis Iltis Doebley)

Zhi-Yong XIONG; Yong LIU; Yong-Gang HE; et al. Journal of Integrative Plant Biology 2005. doi:10.1111/j.1744-7909.2005.00156.x

Other claims from this paper (4)
Mechanismhypothesisoriginal resultbasis n/a

Claim · model-written summary

B' may have originated from B through lateral amplification accompanied by base-pair changes (author interpretation).

Taxon
maizeZea mayse2
Outcome
B'e4
Qualifier
originate from B through lateral amplification accompanied by base-pair changese4

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

Title

Molecular Characterization of a Family of Tandemly Repeated DNA Sequences, TR-1, in Heterochromatic Knobs of Maize and Its Relatives

F C Hsu; C J Wang; C M Chen; et al. Genetics 2003. doi:10.1093/genetics/164.3.1087

Other claims from this paper (8)
Mechanismhypothesisoriginal resultbasis n/a

Claim · model-written summary

The B component may have evolved from the 180-bp knob repeat through mutations during evolution (author interpretation).

Taxon
maizeZea mayse2
Outcome
B componente3
Qualifier
as a result of mutations during evolutione3

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

Title

Molecular Characterization of a Family of Tandemly Repeated DNA Sequences, TR-1, in Heterochromatic Knobs of Maize and Its Relatives

F C Hsu; C J Wang; C M Chen; et al. Genetics 2003. doi:10.1093/genetics/164.3.1087

Other claims from this paper (8)
Mechanismhypothesisoriginal resultbasis n/a

Claim · model-written summary

C plus A may be a single sequence added to B and B', probably via nonhomologous recombination (author interpretation).

Taxon
maizeZea mayse2
Outcome
C plus Ae5
Qualifier
probably via nonhomologous recombinatione5

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
e5

“C plus A may be a single sequence that is added to B and B', probably via nonhomologous recombination”

✓ located verbatim in the source · abstract, characters 763–864

Title

Molecular Characterization of a Family of Tandemly Repeated DNA Sequences, TR-1, in Heterochromatic Knobs of Maize and Its Relatives

F C Hsu; C J Wang; C M Chen; et al. Genetics 2003. doi:10.1093/genetics/164.3.1087

Other claims from this paper (8)
Mechanismhypothesisoriginal resultbasis n/a

Claim · model-written summary

The B repeat may be derived from knob repeats in A chromosomes, which then became structurally modified (author interpretation).

Taxon
maizeZea mayse2
Outcome
the B repeate3
Qualifier
derived from knob repeats in A chromosomese3

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

“suggests that the B repeat is derived from knob repeats in A chromosomes, which subsequently become structurally modified”

✓ located verbatim in the source · abstract, characters 1274–1395

Title

Molecular Characterization of a Family of Tandemly Repeated DNA Sequences, TR-1, in Heterochromatic Knobs of Maize and Its Relatives

F C Hsu; C J Wang; C M Chen; et al. Genetics 2003. doi:10.1093/genetics/164.3.1087

Other claims from this paper (8)
Mechanismhypothesisoriginal resultbasis n/a

Claim · model-written summary

69 bp at the 3' end of B or B' and the entire sequence of C can be removed from the elements by an unknown mechanism (author interpretation).

Taxon
maizeZea mayse2
Outcome
69 bp at the 3' end of B or B', and the entire sequence of Ce6
Qualifier
removed from the elements by an unknown mechanisme6

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
e6

“69 bp at the 3' end of B or B', and the entire sequence of C can be removed from the elements by an unknown mechanism”

✓ located verbatim in the source · abstract, characters 874–991

Title

Molecular Characterization of a Family of Tandemly Repeated DNA Sequences, TR-1, in Heterochromatic Knobs of Maize and Its Relatives

F C Hsu; C J Wang; C M Chen; et al. Genetics 2003. doi:10.1093/genetics/164.3.1087

Other claims from this paper (8)

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