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Repeated sequence

 
Science Dictionary: repetitive DNA
 

Stretches of DNA that repeat themselves throughout a genome, either in tandem or interspersed along the genome. These stretches can comprise up to fifty percent or more of an organism's DNA. It can code for an end product, perhaps a certain enzyme that is needed in large numbers; it can have a structural function (such as a telomere); or it can comprise sequences with no known function.

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Wikipedia: Repeated sequence (DNA)
 

In the study of DNA sequences, one can distinguish two main types of repeated sequence:

The majority of LINEs are LINE-1 and the majority of SINEs are ALUs.

In prokaryotes, CRISPR are arrays of alternating repeats and spacers.

Contents

Other types of repeats

Note: The following are covered in detail in "Computing for Comparative Microbial Genomics"[1].

  • direct repeats
    • global direct repeat
    • local direct simple repeats
    • local direct repeats
    • local direct repeats with spacer
  • inverted repeats
    • global inverted repeat
    • local inverted repeat
    • inverted repeat with spacer
    • palindromic repeat
  • mirror and everted repeats


See also

References

  1. ^ Ussery, David W.; Wassenaar, Trudy; Borini, Stefano (2008-12-22). "Word Frequencies, Repeats, and Repeat-related Structures in Bacterial Genomes". Computing for Comparative Microbial Genomics: Bioinformatics for Microbiologists. Computational Biology. 8 (1 ed.). Springer. p. 133-144. ISBN 978-1-84800-254-8. 

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Copyrights:

Science Dictionary. The New Dictionary of Cultural Literacy, Third Edition Edited by E.D. Hirsch, Jr., Joseph F. Kett, and James Trefil. Copyright © 2002 by Houghton Mifflin Company. Published by Houghton Mifflin. All rights reserved.  Read more
Wikipedia. This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Repeated sequence (DNA)" Read more

 

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