Variant deletion or duplication of already tandem-duplicated genes, as documented here, may be a means to attempt to specialize or adapt the genome while shielding against deleterious single gene copy polymorphisms.
Quantum's superb backup program, for example, crams more onto your cartridges using "de-duplication" -- storing only new sections of documents you've already backed up.
Fig. 3 documents this duplication of UCP2 (ucp2 and ucp2l) in teleosts.
Here, we document a duplication of a large region (cytochrome b, tRNAThr, tRNAPro, ND6, tRNAGlu and the control region) in the mitochondrial genome of three related seabird species.
The role of repetitive elements (REs) in dispersed duplication of genomic sequences is fairly documented from previous studies in model organisms [ 15, 20, 27, 28, 30, 58, 59].
Duplication of subtelomeric sequence has been documented previously in progeny of different genetic crosses including the HB3 × HB3 self cross [ 42].
The genome of B. floridae was previously considered relatively unduplicated [86], [87], however more recent evidence documents large-scale duplication of genes from certain functional categories in the amphioxus lineage.
While gene duplication of PI3K catalytic subunits have been documented in animals (especially in humans), we highlighted similar situations in major eukaryotic groups as Excavata, Alveolata, Stramenopiles or Amoebozoa (Fig. 1).
Therefore there was duplication in documents for reporting these events.
In addition, we documented the occurrence of a duplication of the AT-rich target site in their immediate flanking sequences, a hallmark of retrotransposition.
