title: Either gene amplification or gene conversion may maintain the homogeneity of the multigene family encoding human U1 small nuclear RNA.
mesh_terms: D001483:Base Sequence; D003434:Crossing Over, Genetic; D004261:DNA Replication; D005784:Gene Amplification; D005785:Gene Conversion; D005796:Genes; D006801:Humans; D012313:RNA / Q000235:genetics*; D012335:RNA, Ribosomal / Q000235:genetics; D012342:RNA, Small Nuclear; D012091:Repetitive Sequences, Nucleic Acid
chemical_list: D012335:RNA, Ribosomal; D012342:RNA, Small Nuclear; D012313:RNA