| | Human genomic sequences are retrieved from GenBank database and PCR primers |
| | are synthesized to amplify exons, promoter regions and introns. Genomic DNA |
| | from three independent individuals are mixed into one and used as templates |
| | for direct sequencing of PCR products. In total, 24 individuals are examined in |
| | eight sample tubes. Computer program PolyPhred is used to assist verification |
| | of SNPs by eye inspection. |
