Complex sentence: Regions of non-coding RNA were mapped in several early experiments examining "S. Cerevisiae" using a tiling array approach, which indicated that a large amount of transcriptional activity could be attributed to the intergenic region of the genome.
Split into simpler sentences: Regions of non-coding RNA were mapped in several early experiments examining'S. Cerevisiae using a tiling array approach, which indicated that a large amount of transcriptional activity could be attributed to the intergenic region of the genome.