NDLI: Chromosomal dynamics of human neocentromere formation

Content Provider	Springer Nature Link
Author	Warburton, Peter E.
Copyright Year	2004
Abstract	Neocentromeres are rare human chromosomal aberrations where a new centromere has formed in a previously non-centromeric location. The emergence of new centromeres on a chromosome that already contains an endogenous centromere would be a highly deleterious event which would lead to dicentricity and mitotic instability. Nonetheless, neocentromere formation appears to provide a mechanism for the acquisition of a new centromere. Neocentromeres are most often observed on chromosomal arm fragments that have separated from an endogenous centromere, and therefore actually lead to mitotic stability of what would have been an acentric fragment. Neocentromeres have recently also been observed on apparently unrearranged chromosomes where the endogenous centromere has been inactivated. Furthermore, the process of centromere repositioning during primate chromosomal evolution may depend on the acquisition and subsequent fixation of neocentromeres. This remarkable plasticity in the position of centromeres has important implications for human cytogenetics and chromosome evolution, and provides an opportunity to further our understanding of the process of centromere formation and structure.
Starting Page	617
Ending Page	626
Page Count	10
File Format	PDF
ISSN	09673849
Journal	Chromosome Research
Volume Number	12
Issue Number	6
e-ISSN	15736849
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2004-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Human Genetics Plant Genetics & Genomics Animal Genetics and Genomics
Content Type	Text
Resource Type	Article
Subject	Genetics

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