DYS385, DYS459, and YCAII are three markers where genetic material is typically duplicated at two locations.

The SMGF search page permits separate entry of the two allele values ("a" and "b"), and the Results page indicates matches graphically in the same order input. Matches are displayed in light blue while a mismatch is displayed in dark blue in the appropriate half.

For duplicated markers, two values can be determined for each marker, but not the locations at which they occur. Since the order of the locations is unknown, the SMGF search engine will locate all of the values that match your input values, regardless of the order.

For Example, all the following result in a partial match.

Input Values	Database Values	Result
15   15	15   17
15   16	15   17
14   15	15   17

If there is a mismatch at one or more of the values (i.e. , , ), then the number of matches shown on the results screen decreases by one. For matching purposes, both together count as one marker mismatch (36/37 for an otherwise exact match).

The TMRCA (Time to Most Recent Common Ancestor) calculations are also based on a single match or mismatch for each duplicated marker.