inverted repeat

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in·vert·ed re·peat

(in-vert'ĕd rē-pēt'),
A sequence of nucleotides that is repeated nearly without change except in the opposite direction, usually at some point distant from the original sequence; often associated with gene insertion.
Farlex Partner Medical Dictionary © Farlex 2012

inverted repeat (IR)

a short sequence in a duplex DNA molecule which is repeated in the reverse orientation, either immediately adjacent or after an intervening sequence

After denaturing a duplex containing an inverted repeat, the single-stranded DNA may fold back and form a HAIRPIN or hairpin loop upon renaturing. Compare DIRECT REPEAT.

Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
chinensis chloroplast genome has two inverted repeated regions (IRa and IRb) of 26,758 bp in length, which split the circular genome into small single copy (SSC) and large single copy (LSC) region with 17,383 and 84,585 bp lengths, respectively.
Genetic analysis revealed the sequence annotations and organizations of these sequences and demonstrated that these regions were polymorphic and contained direct and inverted repeats. Different types and numbers of repeats and IGS rDNA structures could serve as potential markers for differentiating these two species of pig nodule worms.
dentatum only contained 2 copies of one 11-nt direct repeat (A1 and A2) and one 10-nt inverted repeat (B and B rev comp).
The amplification products are stem-loop DNA structures with several inverted repeats of the target and cauliflower-like structures with multiple loops, yielding >500 [micro]g/mL.
Only PCB contained one 13 nt complete direct repeat (J1 and J2) and one 12 nt incomplete inverted repeat (W and W reverse complement), which were missing the intervening sequences.