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Isochromosome Y in an infertile heifer
(1990-11-23)
Isochromosome Y in an infertile heifer
(1990-11-23)
Structural and functional evidence that a B chromosome in the characid fish Astyanax scabripinnis is an isochromosome
(Blackwell Science, 2000-07-01)
Astyanax scabripinnis possesses a widespread polymorphism for metacentric B chromosomes as large as the largest chromosome pair in the A complement. on the basis of C-banding pattern, it was hypothesized that these B ...
Different Conformation of Two Supernumerary 18p Isochromosomes, One with a Concomitant Partial 18q Trisomy
(Karger, 2012-01-01)
The presence of a supernumerary 18p isochromosome is a rare chromosomal abnormality that results in 18p tetrasomy. This is a report on the clinical, cytogenetic and molecular findings of 2 non-related patients with a ...
Structural and functional evidence that a B chromosome in the characid fish Astyanax scabripinnis is an isochromosome
(Blackwell Science, 2000-07-01)
Astyanax scabripinnis possesses a widespread polymorphism for metacentric B chromosomes as large as the largest chromosome pair in the A complement. on the basis of C-banding pattern, it was hypothesized that these B ...
Cytogenetic characterization of distinct B chromosomes in a population of the fish Astyanax bockmanni (Teleostei, Characiformes)
(Univ Florence Botany Inst, 2012-01-01)
Individuals of Astyanax bockmanni from one population belonging to the Paranapanema River basin, southeastern Brazil, were cytogenetically examined. In the present paper, we report a diploid number of 50 chromosomes, with ...
ISODICENTRIC-X CHROMOSOME and MOSAICISM - REPORT ON 2 CASES of 45,X/46,X,IDIC(XQ)/47,X,IDIC(XQ),IDIC(XQ) and REVIEW of the LITERATURE
(Wiley-Blackwell, 1993-09-01)
We present 2 instances of Ullrich-Turner syndrome with mosaicism 45,X/46,X,idic(Xq)/47, X,idic(Xq),idic(Xq) and X-isochromosomes with 2 C-bands. the mosaicism with the 3 cell lines points to the presence of the isodicentric ...
Silencing of Transposable Elements Mediated by 5-mC and Compensation of the Heterochromatin Content by Presence of B Chromosomes in Astyanax scabripinnis
(2021-05-11)
The way in which transcriptional activity overcomes the physical DNA structure and gene regulation mechanisms involves complex processes that are not yet fully understood. Modifications in the cytosine-guanine sequence of ...