Pushing back the expansion of introns in animal genomes

Sudhir Kumar, S. Blair Hedges

Research output: Contribution to journalShort surveypeer-review

4 Scopus citations


In a recent paper in Science, Raible et al. (2005) surveyed the position of introns in 30 genes of a marine annelid and showed that over 60% of the introns occupy positions identical to those in human homologs. In contrast, both human and marine annelid genes share only 30% of their introns with other invertebrates. These observations suggest that the common ancestor of most animal phyla had intron-rich genes and reinforce the notion that introns proliferated early in the evolutionary history of eukaryotes.

Original languageEnglish (US)
Pages (from-to)1182-1184
Number of pages3
Issue number7
StatePublished - Dec 29 2005

ASJC Scopus subject areas

  • General Biochemistry, Genetics and Molecular Biology


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