Chromosomes 21, 16, 22, and 15 were found most frequently ... cases had double trisomies as well as another abnormality (i.e., derivative chromosome or mosaicism), bringing the total to 57 cases ...

No abnormality of chromosome number was present in any of ... aberrations in the disease had been recognized. On the average, 15 cells were carefully examined from each patient.

Chromosome abnormality is the condition in a cell or organism where the number of chromosomes or the structure of any chromosome differs from the normal karyotype. When the variant genotype is not ...

A chromosomal abnormality occurs when there is an incorrect number of chromosomes, an incorrect amount of DNA within a chromosome, or chromosomes that are structurally flawed. These abnormalities ...

Microarray analysis identifies more chromosome abnormalities than traditional karyotyping in prenatal testing. Microarrays will also identify findings of unclear clinical significance that should ...

[44] Combining a limited karyotype with the more objective microarray data will allow for a clearer interpretation for any disease-causing chromosome abnormalities, if any, in the fetus undergoing ...