FIGURE 2. Colour-coded panel of the evidence of functional transcription (scale: 0 to 6) in 2,262 unknown conserved blocks.
From the following article:
Numerous potentially functional but non-genic conserved sequences on human chromosome 21
Emmanouil T. Dermitzakis, Alexandre Reymond, Robert Lyle, Nathalie Scamuffa, Catherine Ucla, Samuel Deutsch, Brian J. Stevenson, Volker Flegel, Philipp Bucher, C. Victor Jongeneel and Stylianos E. Antonarakis
Nature 420, 578-582(5 December 2002)
doi:10.1038/nature01251
Arrows indicate the position of the last block of each row on human chromosome 21 (far right). The blocks are depicted as squares and the order along human chromosome 21 (centromere to telomere) is left to right and up to down. The 6 criteria are: GrailEXP, GenomeScan, human EST, mouse EST, QRNA (coding or RNA) and microarray. Vertical arrows indicate NCBI annotations with high support (bottom) and a gene identified during this analysis (right). Note the contrast of low support for most blocks compared with the blocks indicated by arrows.