Chromosome abnormality is the condition in a cell or organism where ... differs from the normal karyotype. When the variant genotype is not associated with abnormal phenotypes (traits ...

Expert Rev Mol Diagn. 2013;13(6):601-611. In other situations, normal microarray analysis in the presence of an abnormal karyotype, such as marker chromosomes, is reassuring, as it indicates that ...

These are cases of mosaicism, in which cells of differing karyotypes are found in the ... cleavage of the zygote only 2 cell types, both abnormal, are expected. If, however, the accident occurs ...

At the first metaphase stage of meiosis, twenty bivalents are normally formed and this pairing is commonly used to correlate abnormal ... markers (cells with a visible different karyotype from ...