repetitive DNA

repetitive DNA
nucleotide sequences occurring multiply within a genome; they are characteristic of eukaryotes and generally do not encode polypeptides. Sequences may be clustered or dispersed, and repeated moderately (10 to 104 copies per genome) to highly (≥106 copies per genome). Moderately repetitive DNA sequences encode some structural genes for ribosomal RNA, transfer RNA, and histones; highly repetitive sequences are mostly satellite DNA. Cf. single copy DNA.

Medical dictionary. 2011.

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  • repetitive DNA — repetitive DNA, sich im Genom von Eukaryoten häufig wiederholende Nucleotidsequenzen. Hochrepetitive Sequenzen wiederholen sich zwischen 105 und 106 mal im Genom; sie enthalten keine genetische Information. Von den mittelrepetitiven Sequenzen mit …   Deutsch wörterbuch der biologie

  • Repetitive DNA — Als repetitive DNA bzw. repetitive DNA Elemente werden DNA Bereiche im Erbgut bezeichnet, deren Sequenz aus sich wiederholenden Abschnitten besteht. Hier soll eine Zusammenfassung und Übersicht der Bezeichnungen dargestellt werden, nähere… …   Deutsch Wikipedia

  • repetitive DNA — Nucleotide sequences in DNA that are present in the genome as numerous copies. Originally identified by the value on the Cot curve derived from kinetic studies of DNA renaturation. These sequences are not thought to code for polypeptides. One… …   Dictionary of molecular biology

  • repetitive DNA — DNA sequences that are present in a genome in many copies, some of it originating from retrotransposon activity. A substantial proportion of all eukaryotic genomes is composed of this class of DNA, whose biological function is uncertain.… …   Glossary of Biotechnology

  • DNA replication — DNA replication. The double helix is unwound and each strand acts as a template for the next strand. Bases are matched to synthesize the new partner strands. DNA replication is a biological process that occurs in all living organisms and copies… …   Wikipedia

  • DNA, repetitive — DNA sequences that are repeated in the genome. These sequences do not code for protein. One class termed highly repetitive DNA consists of short sequences, 5 100 nucleotides, repeated thousands of times in a single stretch and makes up satellite… …   Medical dictionary

  • non repetitive DNA — A nucleotide sequence which does not include a significant proportion of repetitive sequences of nucleotides …   Glossary of Biotechnology

  • highly repetitive DNA —    The first component to reassociate and is equated with satellite DNA …   Forensic science glossary

  • DNA — For a non technical introduction to the topic, see Introduction to genetics. For other uses, see DNA (disambiguation). The structure of the DNA double helix. The atoms in the structure are colour coded by element and the detailed structure of two …   Wikipedia

  • Repetitive Sequenz — Als repetitive DNA bzw. repetitive DNA Elemente werden DNA Bereiche im Erbgut bezeichnet, deren Sequenz aus sich wiederholenden Abschnitten besteht. Hier soll eine Zusammenfassung und Übersicht der Bezeichnungen dargestellt werden, nähere… …   Deutsch Wikipedia

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