The overall compaction level and intranuclear location varies as a function of gene density for both entire chromosomes [J.A. Croft, J.M. Bridger, S. Boyle, P. Perry, P. Teague,W.A. Bickmore, Differences in the localization and morphology of chromosomes in the human nucleus, J. Cell Biol. 145 (1999) 1119 1131] and specific chromosomal regions [N.L. Mahy, P.E.
Besides experimenting with the metamorphosis of axolotl, he also researched the morphology of chromosomes in 1920: both in Berlin.
In TPX2-depleted oocytes, the expression of TPX2ΔN, lacking the N-terminal 118 amino acids, is sufficient to restore both spindle size and the morphology of chromosomes (Figs 5B, 5D and 7A).
Notably, the CMPD1-treated oocytes cultured for 12 h showed abnormal 20 bivalents (Fig. 4Ec-e), and the morphology of chromosomes in most (75.4%, n = 57) oocytes was abnormal compared to the controls.
This is supported by the finding that inhibiting transcription alters the size and morphology of chromosome territory and regions of chromosome mingling [51], [54], arguing that transcription in factories is a major driving force in the arrangement of chromosomes.
DUXY paralogs were detected exclusively in the pericentromeric region of human and gorilla chromosome 9, a region prone to pericentric inversions thereby altering the structural morphology of chromosome 9 twice during great ape and human evolution [30] [33].
No global differences in recombination rates were detected for LG11 between the two sexes, which may account for the indistinguishable morphologies of sex chromosomes in C. farreri.
Another advantage of ND-FISH over standard FISH is that it avoids chromosome denaturation; thus, the morphology of the chromosomes is well maintained.
By studying the morphology of the chromosomes, McClintock was able to link specific chromosome groups of traits that were inherited together.
Previous studies have shown that age < 2 years, high white blood cell (WBC) and peripheral blast cell (PBC) counts at diagnosis, French-American-British (FAB) M4 and M5 morphology, inversion of chromosome 16, and a hyperdiploid cytogenetic profile are risk factors for CNS involvement in paediatric AML patients at diagnosis [ 6- 8].
