作者: Jeffrey D. Palmer , John M. Logsdon
DOI: 10.1016/S0959-437X(05)80194-7
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摘要: Accumulating evidence that introns are highly restricted in their phylogenetic distribution strongly supports the view were inserted late eukaryotic evolution into preformed genes and, hence, exon-shuffling played no role assembly of primordial genes. Potential mechanisms intron insertion and possible nuclear splicing machinery from self-splicing group II also discussed.