repeat
(re-pēt´)
something done or occurring more than once, particularly over and over.
long terminal repeats(LTR)
identical DNA sequences, usually several hundred base pairs long occurring at each end of an integrated retrovirus and essential
for integration of the molecule into host DNA.
tandem repeat
arrangement of two or more copies of a nucleotide sequence adjacent to each other within a segment of DNA.
arrangement of two or more copies of a gene or two or more copies of a segment of a chromosome adjacent to each other on a
chromosome.

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