biological material interval genetic interval It is genomic, so that protein is not the child of this class. it is continuous, so that neither genome(colletive of chormosomes), nor genotype diploid(collective alleles comes from different chromosomes), nor gene family(collective of genes of same homolog located to different chromosomes) are genomic interval. Whereas gene cluster which are juxtapositioned genes can be subclass of genomic interval. By length, the longest Genomic Interval is the interval with same start point and end point with chromosome, and smallest is when one start point and end point are equal( one residue of DNA or RNA). Interval holds property interval relation. Yu Lin, Norihiro Sakamoto (2009) “Genome, Gene, Interval and Ontology” Interdisciplinary Ontology Vol.2 - Proceedings of the Second Interdisciplinary Meeting, Tokyo, Feb. 28th- Mar. 1st, 2009. Page(s):25-34 (http://cdb-riken.academia.edu/LinYu/Papers/142399/Genome_Gene_Interval_and_Ontology) genetic material interval genomic material interval the spatial continuous physical entity which contains ordered genomic sets(DNA, RNA, Allele, Marker,etc.) between and including two points(Nucleic_Acid_Base_Residue) on a chromosome or RNA molecule which must have a liner primary sequence sturcture. DNA interval RNA interval genetic interval base residue protein interval