In order to correlate the dose delivered and dicentric
frequency, Pearson's correlation was determined at the 5% or P [less than or equal to] 0.05 level of significance.
chromosome; AF, acentric fragments; ChB, chromatid breaks.
frequencies in PBL show a clear linear quadratic dose-effect relationship up to 5 Gy for acute photon exposures.
Among detected structural aberrations the highest presence of gaps, breaks and marker chromosomes was documented, The ring chromosomes and the chromosome fragmentation were present within the C1 only; while dicentric
chromosomes were detected in C1 and C2.
The following CSAs were observed: 45.1% acentric fragments, 18.3% dicentrics
, 2.1% chromosome-type breaks and 2.1% chromosome minute fragments.
--anaphase and telophase bridges: dicentric
chromosomes or exchanges;
AF: acentric fragment; MA: multiple aberrations; b: chromatid break; g: chromatid gap; R: ring; D: dicentric
; B: chromosome break; G: chromosome gap.
The chromosomal aberrations were represented in the form of chromatid deletions, dicentric
, fragment, centromeric separation, ring and polyploidy.
A girl with duplication 17p10-p12 associated with a dicentric
It was demonstrated that the iso-B of Metaleptea brevicornis is dicentric
and its anomalous meiotic behavior induces the production of very high frequencies of abnormal sperm (Grieco & Bidau 2000).
It has been known for many years that radiation exposure could cause single or double strand breaks in the chromosomes, leading to dicentric
chromosomes, translocations and more complex rearrangements (10), (11).
The chromosomal aberrations were classified according to Savage (1976), as gaps, breaks, deletions, fragments, rings and dicentric