role of repetitive DNA in structure and evolution of sex chromosomes in plants
Eukaryotic genomes contain a large proportion of repetitive DNA sequences, mostly transposable elements (TEs) and tandem repeats. These repetitive sequences often colonize specific chromosomal (Y or W chromosomes, B chromosomes) or subchromosomal (telomeres, centromeres) niches. Sex chromosomes, esp...
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Published in | Heredity Vol. 102; no. 6; pp. 533 - 541 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
England
Springer Nature B.V
01.06.2009
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Subjects | |
Online Access | Get full text |
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Summary: | Eukaryotic genomes contain a large proportion of repetitive DNA sequences, mostly transposable elements (TEs) and tandem repeats. These repetitive sequences often colonize specific chromosomal (Y or W chromosomes, B chromosomes) or subchromosomal (telomeres, centromeres) niches. Sex chromosomes, especially non-recombining regions of the Y chromosome, are subject to different evolutionary forces compared with autosomes. In non-recombining regions of the Y chromosome repetitive DNA sequences are accumulated, representing a dominant and early process forming the Y chromosome, probably before genes start to degenerate. Here we review the occurrence and role of repetitive DNA in Y chromosome evolution in various species with a focus on dioecious plants. We also discuss the potential link between recombination and transposition in shaping genomes. |
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Bibliography: | http://dx.doi.org/10.1038/hdy.2009.17 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 ObjectType-Article-2 ObjectType-Feature-3 ObjectType-Review-1 |
ISSN: | 0018-067X 1365-2540 |
DOI: | 10.1038/hdy.2009.17 |