What is a multi-copy Y-STR marker?

Multi-copy Y-STR markers are STRs that occur more than once in the human genome. This means each marker will have more than one allele value in a paternal ancestry report.

For example, the DYS385, DYS459 and YCAII are typically present at two different locations on the Y chromosome; therefore, they are also termed “duplicated markers.”

Trace Your Paternal Line

Over 100 free ancestry web apps including Marie Antoinette, the Romanov Family, etc. Login to access your maternal ancestry test results. 

Free ancestry web apps are available to users who have taken the Y-DNA Test.

Get Test

Already took the test? Get started for FREE!

Log In