Figure 1

Schematic representation of the SSC7 and human homologous regions. Center part: schematic representation of genes in the 64-69 Mb SSC7 region (in accordance with the sscrofa9 draft sequence); top left hand side: HSA15 segment homologous to the left half of this SSC7 region; lower right hand side: HSA14 segment homologous to the right half of this SSC7region; each gene sequence is represented by an arrow i.e. full arrow if homologous porcine gene exists and hollow arrow if not; lower left hand side: representation of part of the porcine sequence gap including CYP11A1 with its structure schematized showing the location of the polymorphisms characterised in this study i.e. one SNP (R in IUPAC codification) and one microsatellite identified in the distant 5' flanking sequence; SNP (Y) patented by Greger [18] was found in the proximal promoter and SNP (R) previously characterised by Grindfleck et al. [12] was found in the first exon; two new SNP (R and R) in the first intron and two consecutive SNP (WK) in the second intron were also detected; composition and position in Mb (Sscrofa9) of SNP marker groups: (1) over the 64.38-64.65 Mb region with M1 = ALGA0042289; M2 = INRA0026201; M3 = ASGA0034277; M4 = DRGA007689; M5 = ALGA0042294; M6 = H3GA0021937; (2) over the 65.13-65.33 Mb region with M7 = ASGA0034288; M8 = INRA0026223; M9 = ALGA0042315; M10 = ASGA0034291; (3) over the 65.91-66.11 Mb region with M11 = H3GA0021967; M12 = ASGA0034309; M13 = ASGA0034310; M14 = MARC0076146 and (4) over the 68.27-68.56 Mb region with M15 = INRA0026286; M16 = MARC0099388; M17 = inra0026290; M18 = ALGA0042359