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. 2007 Mar;3(1):14–19.

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© Tomohiro Nakayama et al. Licensee Master Publishing Group

This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.5/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Schema of overlapping patterns among loci or exons. Black arrows indicate locus or exon “1”. Shaded arrows indicate locus or exon “2”. Locus “2” or exon “2” were defined as those with the side of short arm (p) were located downstream of locus 1 or exon 1. A was the length of the flanking region without overlapping, located on the side of short arm (p). B was the length of the overlapping region. C was the length of the flanking region without overlapping, located on the side of long arm (q). a: Schema of 2 loci or exons on the same strand. Groups 1 and 2: both regions are on the positive strand (unidirectional). Groups 3 and 4: both regions are on the negative strand (unidirectional). Groups 2 and 4: region 1 includes region 2 (comprehensive). b: Schema of 2 loci or exons on opposite strands. Group 5: convergent; Group 6: divergent; Groups 7 and 8: comprehensive.