The majority of chromosomal rearrangements observed in Burkitt lymphomas involve a translocation between 8q and 14q, while the remaining minority carry variant translocations between chromosome 8 and either 2 or 22. We have studied the JI Burkitt lymphoma cell line carrying the variant 2;8 chromosome translocation using a combination of high-resolution and molecular cytogenetic techniques. We h...

Recent molecular analyses of Burkitt lymphomas carrying the t(8;14) chromosome translocation have indicated that a dichotomy exists regarding the molecular mechanisms by which the translocations occur. Most sporadic Burkitt tumors carry translocations that apparently arise due to mistakes in the immunoglobulin isotype-switching process. In contrast, there is evidence that the translocations of ...

In a family in which the father carried a balanced translocation between chromosomes 15 and 22 two of his children had Prader-Willi syndrome and an unbalanced chromosome complement, having lost the proximal bands from the long arm of chromosome 15. His four other surviving children were normal but carried a balanced translocation.

Two new techniques are described for genetic mapping of reciprocal translocations in A. nidulans, which can be used to locate centromeres and meiotically unlinked markers. They both make use of unbalanced disomics from heterozygous translocation crosses. These are mainly hyperhaploids of two classes: either typical-looking n + 1 with a normal chromosome in addition to a haploid set containing t...

The breakpoint regions of both translocation products of the (9;22) Philadelphia translocation of CML patient 83-H84 and their normal chromosome 9 and 22 counterparts have been cloned and analysed. Southern blotting with bcr probes and DNA sequencing revealed that the breaks on chromosome 22 occurred 3' of bcr exon b3 and that the 88 nucleotides between the breakpoints in the chromosome 22 bcr ...

An extreme variation of the short arm of no. 21 chromosome in the mother of a 21/21 translocation mongol is described. The possible relation between the very long short arm of chromosome no. 21 in the mother and a centric fusion type of translocation mongolism in the offspring is discussed.

Purpose
 A number of mechanisms have been proposed for the effect chromosomal translocations on spermatogenesis and sperm maturation. However, there are still numerous ambiguous issues regarding these two processes. The aim this study is to evaluate chromosome break areas count in light literature.
 Material Methods
 was conducted data 16 male patients with reciprocal or Robertso...

The construction of the 28-chromosome karyotype Dasypyrum breviaristatum was undertaken using multicolor non-denaturing fluorescent in situ hybridization (ND-FISH) and Oligo-FISH painting protocols. A novel wheat-D. line D2138 contained 44 chromosomes including a pair D. 6VbS.2VbL translocation chromosomes. Individual F2 F3 progenies cross between with wheat lines CM62, MY11 JM22, respectively,...

A child with disseminated Ewing's sarcoma underwent cytogenetic investigations which showed different structural rearrangements of chromosome 22 at diagnosis (?ring22), and at relapse [t(10;22)], but the classic translocation t(11;22) was not detectable. This case provides further evidence of the importance of chromosome 22 in this disease, while raising some questions about the central importa...