Good Evening Tom: Please note the discussion of the chr*_random chromosome names in the FAQ:
http://genome.ucsc.edu/FAQ/FAQdownloads#download10 --Hiram Tom Blackwell wrote: > A successful download from hgTables of table 'snp129' > gives 15,625,346 data rows + 1 header row x 18 columns. > > My question concerns odd values in column 2 'chrom'. > A total of 117,375 rows in the table show chromosome > names of the form 'chr00_random'. These are rows > 15,321,501 through 15,438,875. A total of 186,471 > further rows show names 'chr5_h2_hap1', chr22_h2_hap1', > 'chr6_cox_hap1' or 'chr6_qbl_hap2'. These are rows > 15,438,876 through 15,625,346. Please, how should I > interpret these values for column 2 'chrom' ? > > The button for [describe table schema] in the table > browser is informative about the values in other fields, > but not these in 'chrom'. I have downloaded and searched > the 'b129_..._36_3.bcp.gz' files directly from dbSNP and > I cannot find any such chromosome names. Where do these > values come from ? > > - many thanks - > > Tom Blackwell > University of Michigan, Biostatistics > > _______________________________________________ > Genome maillist - [email protected] > http://www.soe.ucsc.edu/mailman/listinfo/genome > _______________________________________________ Genome maillist - [email protected] http://www.soe.ucsc.edu/mailman/listinfo/genome
