A short tandem repeat marker. They can be simple repeats like GATA or more complex. Generally, they vary by repeat count and not a binary state. A Y-STR is an STR on the Y-chromosome.

A short tandem repeat marker. They can be simple repeats like GATA or more complex. Generally, they vary by repeat count and not a binary state. A Y-STR is an STR on the Y-chromosome.