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tandem array

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localized repeat sequences

Overview page. Subjects: Ecology and Conservation.

Repetitive DNA that occurs in a tandem array, often with a short repeating unit (e.g. satellite DNA).

See overview in Oxford Index

long interdispersed element

Overview page. Subjects: Ecology and Conservation.

(LINE)

A DNA sequence of more than 5000 base pairs with a copy number greater than 10 000, that occurs throughout the genome rather than in a tandem array.

See overview in Oxford Index

nucleolar organizer

Overview page. Subjects: Biological Sciences — Chemistry.

A segment of a chromosome of a eukaryotic cell containing genes that encode ribosomal RNA. In the nondividing cell it is associated with the nucleolus in the assembly of ribosomes. The...

See overview in Oxford Index

repetitive DNA

Overview page. Subjects: Genetics and Genomics.

Any DNA sequence which occurs many times within a genome; it may be in a tandem array or dispersed repeats.

See overview in Oxford Index

satellite DNA

Overview page. Subjects: Biological Sciences.

The proportion of the DNA of a eukaryotic cell that consists of very large numbers (approximately 106) of copies of a short nucleotide sequence. It occurs mainly around the centromeres and...

See overview in Oxford Index

short interdispersed element

Overview page. Subjects: Ecology and Conservation.

(SINE)

A DNA sequence, of less than 500 base pairs with a copy number over 100 000, that occurs throughout the genome rather than in a tandem array.

See overview in Oxford Index