Analysis of the proximal 400 kb of the human contig, showing duplications indicative of pericentromeric regions. Repeat-masked genomic sequence was compared with the Homo sapiens subset of the nonredundant (nr) and high-throughput genomic sequence database (htgs) databases. Identity to fully or partially sequenced paralogous clones is indicated as blocks between regions apparently unique to chromosome 22, with the known chromosomal locations identified. An individual chromosome may not show paralogy over the entire block. (UL) Unlocalized clones. The analysis was performed on May 10, 2000, when 80.8% of the genome was represented by draft (61.9%) and/or finished (18.9%) sequence (http://www.ncbi.nlm.nih.gov/genome/seq/page.cgi?F=HsHome.html&ORG=Hs). Additional paralogous segments may be found as the genome sequence is finished.