Hello Arthur, I'm not clear exactly what you are looking at in the UCSC Genome Browser.
This URL you provided is for the NCBI website explaining Build Stats for the latest human assembly: http://www.ncbi.nlm.nih.gov/mapview/stats/BuildStats.cgi?taxid=9606&build=37&ver=1 And the tool that you mention (biomart) is part of the Ensembl website. If you have a question about the differences between what you see on the Ensembl website and what you see at NCBI, you should contact the Ensembl help desk: http://www.ensembl.org/info/about/contact/index.html Regards, ---------- Ann Zweig UCSC Genome Bioinformatics Group http://genome.ucsc.edu you, xintian wrote: > Dear hg19 Assembly users: > > > > When I am looking at the statistics of hg19 Assembly, from here: > > http://www.ncbi.nlm.nih.gov/mapview/stats/BuildStats.cgi?taxid=9606&buil > d=37&ver=1 > > > > I couldn't understand this: > > Why there are only 7 exons per gene but 10 exons per transcript. > > > > Also, it claims that there are 2044(or2115) one-exon gene. I downloaded > all human gene from biomart, there are 49506 genes and 17085 are > one-exon genes. > > I wonder if there is any special criteria when referring to genes. > > > > Bests, > > arthur > > _______________________________________________ > Genome maillist - [email protected] > https://lists.soe.ucsc.edu/mailman/listinfo/genome _______________________________________________ Genome maillist - [email protected] https://lists.soe.ucsc.edu/mailman/listinfo/genome
