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Satellite DNA libraries and centromere evolution

Ugarković, Đurđica (2008) Satellite DNA libraries and centromere evolution. The Open Evolution Journal, 2 . pp. 1-6. ISSN 1874-4044

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Abstract

Related species share a pool of satellite DNA sequences known as a satellite DNA library. Such sequences may persist in the genome for long evolutionary time at latent locations and can be amplified in any species. This leads to rapid turnover of satellite DNA composition which is characteristic for centromere evolution. The &laquo ; library&raquo ; hypothesis however does not predict whether any of the sequences can be amplified, and subsequently confer a centromere role. Based on structural and evolutionary studies it is proposed that satellite DNAs are highly evolved sequences whose evolution has proceeded through the combined action of natural selection and molecular drive. Their recruitment to a satellite library and retention within the genome could be related to some structural characteristics which enable them to be extended into a functional centromere array. A newly formed array could replace the previous centromere if it has some selective advantage in transmission at meiosis due to particular satellite sequence features and/or high homogeneity.

Item Type: Article
Uncontrolled Keywords: satellite DNA; centromere; kinetochore; heterochromatin
Subjects: NATURAL SCIENCES > Biology
Divisions: Division of Molecular Biology
Projects:
Project titleProject leaderProject codeProject type
Evolucija i funkcija brzo evoluirajućeg dijela eukariotskog genoma[3874] Đurđica Ugarković098-0982913-2832MZOS
Depositing User: Đurđica Ugarković
Date Deposited: 20 Feb 2015 17:12
Last Modified: 20 Feb 2015 17:12
URI: http://fulir.irb.hr/id/eprint/1692
DOI: 10.2174/1874404400802010001

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