« Last post by seferhabahir on Today at 01:26:23 AM »
what does cluster mean?
I, and others, usually use the phrase "Y-DNA cluster" to mean a group of test results (usually found within a FTDNA project) that are identifiable as being genetically related because of observable similarities in some of their STR markers. The members of these clusters presumably descend from the same common ancestor (hence the term TMRCA - time to most recent common ancestor). One of the ways to know that members of a cluster actually do descend from a common ancestor is to identify certain SNPs that they all have in common through inheriting paternal Y-DNA mutations, in addition to the similarities in their STR markers.