Table 3. Description of SNPs detected.
| Gene | No. microarray SNPs | No. discrepant sites/ No. SNPs checked* | No. new capillary SNPs | Total No. discrepant sites | Expected heterozygosity per site |
| CHRNA1 | 2 | 1/2 | 0 | 1 | 0.0002 |
| CHRNB1 | 7 | 5/7 | 0 | 5 | 0.0015 |
| CHRND | 11 | 4/11 | 0 | 4 | 0.0009 |
| CHRNE | 25 | 7/21 | 4 | 7 | 0.0009 |
| RAPSN | 10 | 1/9 | 1 | 1 | 0.0007 |
| COLQ | 9 | 1/9 | 0 | 1 | 0.0007 |
| CHAT | 10 | 0/10 | 0 | 0 | 0.0008 |
| MUSK | 6 | 1/6 | 1 | 1 | 0.0005 |
| Total | 80 | 20/75 | 6 | 20 | 0.0008 |
*
A total of 75 of the 80 microarray SNPs were cross-checked via capillary sequencing or electronically through the GenBank SNP database.