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  • functional
  • Instead, their preservation across diverse amniotes, their apparent conservation in exon structure, and similarities in their pattern of brain expression during embryonic and early postnatal stages together indicate that these are functional RNA molecules, of which some have roles in vertebrate brain development. (biomedcentral.com)
  • snRNA
  • These results indicate that the human U3 snRNA gene is different from human U1 snRNA gene in containing regulatory elements more than 500 bp upstream. (semanticscholar.org)