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Information × Registration Number 0208U006361, 0107U009262 , R & D reports Title Differential expression and molecular evolution of ribosomal RNA genes: functional role of repeated spacer elements popup.stage_title Head Roman А. Volkov, Доктор біологічних наук Registration Date 01-10-2008 Organization Yuri Fedkovych Chernivtsi National University popup.description2 Intrergenic spacer region (IGS) of 35S rDNA was cloned and sequenced for 9 species of Lycopersicon and Solanum. It was demonstrated that up-stream of the transcription initiative site (TIS) the region composed of subrepeats of structural classes I and II followed by the AT-reach region are present in the IGS of the studied species. In the Lycopersicon species, subrepeats of type III were also found down-stream of TIS. The species differ remarkably in the total length of the IGS due to different number of the subrepeats both up-stream and down-stream of TIS. A very high level of intragenomic sequence homogeneity of IGS was found indicating a high efficiency of concerted evolution, which provides homogenization of 35S rDNA repeats. Product Description popup.authors popup.nrat_date 2020-04-02 Close