Lockwood DNA Study - Conversion
This page gives details of the steps necessary to convert the results from one DNA testing laboratory to another. Currently only converting from Oxford Ancestors to FamilyTreeDNA is shown.
Oxford Ancestors use a 10 marker test, whereas FTDNA use a 12, 25 or 37 marker test.
| Marker | Used By OA | Used by FTDNA | Conversion required |
| DYS19 | Yes | Yes (12) | No Change |
| DYS388 | Yes | Yes (12) | No Change |
| DYS389i | Yes | Yes (12) | Add 3 to the OA value. See example below. |
| DYS389ii | Yes | Yes (12) | Take new 389i value, add to 389ii value. See example below |
| DYS390 | Yes | Yes (12) | No Change |
| DYS391 | Yes | Yes (12) | No Change |
| DYS392 | Yes | Yes (12) | No Change |
| DYS393 | Yes | Yes (12) | No Change |
| DYS425 | Yes | Not Used | Almost everyone has a value of 12 for this marker |
| DYS426 | Yes | Yes (12) | No Change |
Example of converting the 389i and 389ii values
| OA | FTDNA |
| DYS Marker | Value | DYS Marker | Value |
| 389i | 9 | 389-1 | 12 |
| 389ii | 15 | 389-2 | 27 |
An online converter for the above can be found at http://www.ybase.org/oacalc.asp