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Mass Migration Of A Group I Intron: Promiscuity On A Grand Scale.

M. Gray
Published 1998 · Medicine, Biology

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To date, most studies of group I intron mobility have dealt with intraorganismal transfer occurring between intron+ and intron− alleles of particular genes during genetic crosses. Little is known about the frequency and extent of horizontal transfer of group I introns between organisms that do not mate. Most such identified cases involve transfer into the same genome (e.g., mitochondrial) in taxa that at least belong to the same phylum (see ref. 5). There is, however, one reported instance in which interphylum (and interorganellar) transfer of group I introns appears to have occurred (6). Even so, nothing remotely approaching the extraordinary intron radiation reported by Cho et al. in this issue of the Proceedings (5) has been documented previously.
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