Sus scrofa Photo courtesy of USDA (Agricultural Research Service)

The Nov. 2009 Sus scrofa draft assembly (SGSC Sscrofa9.2 (NCBI project 10718, GCA_000003025.2)) was produced by the Swine Genome Sequencing Consortium and the Wellcome Trust Sanger Institute

### Sample position queries

A genome position can be specified by the accession number of a sequenced genomic region, an mRNA or EST, a chromosomal coordinate range, or keywords from the GenBank description of an mRNA. The following list shows examples of valid position queries for the Pig genome. See the User's Guide for more information.

Request: |  | Genome Browser Response:
--- | --- | ---
chr18 |  | Displays all of chromosome 18
chr13:1-1000000 |  | Displays first million bases of chr 13
chr13:1000000+2000 |  | Displays a region of chr 13 that spans 2000 bases, starting with position 1000000
AK231718 |  | Displays region of mRNA with GenBank accession number AK231718
CV877084 |  | Displays region of EST with GenBank accession CV877084
homeobox caudal |  | Lists mRNAs for caudal homeobox genes
zinc finger |  | Lists many zinc finger mRNAs
kruppel zinc finger |  | Lists only kruppel-like zinc fingers
zhang |  | Lists mRNAs deposited by scientist named Zhang
Xia,Q. |  | Lists mRNAs deposited by co-author Q. Xia
Use this last format for author queries. Although GenBank requires the search format Xia Q, internally it uses the format Xia,Q..

### Assembly details

The pig genome assembly is a hybrid of BAC end-sequencing to anchor contigs combined with whole-genome shotgun (WGS) libraries. See also: Porcine Genome Sequencing Project description.

There are 19 chromosomes, chr1 - chr18, chrX plus the mitochondrial sequence chrM from genbank accession NC_012095 for a total sequence length of 2,262,501,571 bases. There are 31,203,023 'N' bases in gaps, leaving 2,231,298,548 ACGT bases.

Bulk downloads of the sequence and annotation data are available via the Genome Browser FTP server or the Downloads page. The Pig browser annotation tracks were generated by UCSC and collaborators worldwide. See the Credits page for a detailed list of the organizations and individuals who contributed to the success of this release.