| Circular extrachromosomal Ac and Ds molecules have been described previously, although their origin and possible relation to the circular molecules discussed here is unclear. |
| Although it is possible that these extra ND5-like sequences exist as extrachromosomal, episomal DNA, several lines of evidence suggest they are of nuclear origin. |
| We now focus on the mechanisms of formation of extrachromosomal DNA molecules with complex amplicons formed by the fusion of genes coming from several loci in the genome. |
| Crosses were done between transgenic plants carrying pShortDs and plants containing transposase to analyze the ends of extrachromosomal linear Ds elements. |
| Upon heat shock during larval development, FLP and I-SceI produce the extrachromosomal targeting molecule. |
| Unlike the retrovirus, adenoviral DNA functions in an extrachromosomal manner. |
