# ucsc ensembl chr1 1 chr10 10 chr11 11 chr12 12 chr13 13 chr14 14 chr15 15 chr15_random 15_random chr16 16 chr17 17 chr18 18 chr19 19 chr1_random 1_random chr2 2 chr20 20 chr21 21 chr21_random 21_random chr2_random 2_random chr3 3 chr4 4 chr5 5 chr6 6 chr7 7 chr8 8 chr9 9 chrM MT chrUn_random Un_random