polycentric chromosome

In genetics, a polycentric chromosome is any chromosome featuring multiple centromeres.{{cite journal | vauthors = Neumann P, Navrátilová A, Schroeder-Reiter E, Koblížková A, Steinbauerová V, Chocholová E, Novák P, Wanner G, Macas J | display-authors = 6 | title = Stretching the rules: monocentric chromosomes with multiple centromere domains | journal = PLOS Genetics | volume = 8 | issue = 6 | pages = e1002777 | date = 2012-06-21 | pmid = 22737088 | pmc = 3380829 | doi = 10.1371/journal.pgen.1002777 | doi-access = free }} Polycentric chromosomes are produced by chromosomal aberrations such as deletion, duplication, or translocation.{{Citation needed|date=March 2020|reason=There have been other possibly incorrect statements in this article, and the article had poor grammar, so content may be untrustworthy}} Polycentric chromosomes usually result in the death of the cell because polycentric chromosomes may fail to move to opposite poles of spindle fiber during anaphase. As a result, the chromosome is fragmented, which causes the death of the cell. In some algae, such as Spirogyra, polycentric chromosomes appear normally.{{cite journal | vauthors = Godward MB | date= April 1954 |title=The 'Diffuse' Centromere or Polycentric Chromosomes in Spirogyra |journal=Annals of Botany |volume=18 |issue=2 |pages=143–144 |doi=10.1093/oxfordjournals.aob.a083387 }} They also occur in the sedge, Luzula.{{cite journal|author=D. Lewis |year=1986 |title=Leonard Francis La Cour 28 July 1907–3 November 1984 |journal=Biographical Memoirs of Fellows of the Royal Society |volume=32 |issue=32 |page=368 |doi=10.1098/rsbm.1986.0011|doi-access=free }}