aneuploidy

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aneuploidy

[′a·nyü‚plȯid·ē]
(genetics)
Deviation from a normal haploid, diploid, or polyploid chromosome complement by the presence in excess of, or in defect of, one or more individual chromosomes.
References in periodicals archive ?
If the fetus is male or aneuploid, the ff can be calculated by use of sequence tag data from the X or aneuploid chromosomes (29).
If all embryos are identified as aneuploid, this information helps some individuals and couples move on to other ways of having a family.
Studies have also shown that men with higher frequencies of aneuploid sperm may be at a higher risk of fathering an aneuploid child (Lowe et al.
Two other aneuploid progeny categories that result from NDJ in the male parent may be present in the F1, however, these individuals cannot be phenotypically distinguished from the expected euploid F1 progeny (Figure 5).
All of these genera, however, present an aneuploid series without clear polyploid peaks.
The reported location (Materials and Methods) of each microsatellite marker could be confirmed using the aneuploid stocks.
purpuratus are harvested at the age of 18 mo, it can be considered safe to grow triploid scallops in the environment, where normal diploid scallops are cultivated, because no release of viable, aneuploid gametes has to be feared.
The discovery of a complex mixture of diploid, triploid, tetraploid as well as aneuploid individuals in the progeny of single sexuals that were experimentally introduced into entirely asexual populations established the occurrence of pollen flow from triploids to diploids (Sterk 1987).
A model that explains the varying frequency of aneuploid children with maternal age (J-shaped curve) as well as aneuploidy of paternal origin.
If an aneuploid population is observed, its DNA index (DI) is determined by dividing the peak channel number of the aneuploid population GO/ GI phase by the peak channel number of the diplold population GO/G1 phase.
10,11) This dichotomous classification of DCIS lesions correlated well with a number of differences in many important tumor markers as well: in addition to the high-grade cytology of the cells of the comedo subtype, comedo DCIS lesions are also frequently negative for estrogen receptor (ER) expression, show frequent amplification of the HER2/neu gene, are frequently aneuploid, have mutations in the suppressor gene p53, and high proliferative rates.
Sonographic measurement of the anechoic space between the skin and the edge of the soft tissue that overlies the cervical spine--otherwise known as nuchal translucency (NT)--is used to determine the likelihood that the fetus is aneuploid (FIGURE 1).