neocentromere

neocentromere

[‚nē·ō′sen·trə‚mir]
(genetics)
A functional centromere in a novel location; may lack specific classes of deoxyribonucleic acid usually present in a centromere.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
One of these cases had 2 identical copies of a marker chromosome derived from chromosome 9, with a potential neocentromere, since these "acentric" markers were very stable (Figure 6, A through D; Table 3).
In case 55, ICP established the mechanism of marker formation as a stable acentric chromosome with a neocentromere.
This model explains the extreme size difference between XR and neo-Y, the distal association between both elements, the existence of a neocentromere in XL and the very irregular male meiotic behavior of the sex bivalent (asynapsis, lagging, nondisjunction), as well as some peculiarities of the neoX/neo-X bivalent in female meiosis.