A major branch on the family tree of
is called a Haplogroup.
These haplogroup branches characterize the early migrations of population groups. As a result, haplogroups are
usually associated with a geographic region. If haplogroups are the branches of the tree then the
represent the leaves of the tree. All of the haplotypes that belong to a particular haplogroup are leaves on
the same branch. Both
tests provide haplogroup information, but remember that the haplogroups nomenclature is different for each.
A Y-DNA haplogroup is defined as all of the male descendants of the single person who first showed a particular
(pronounced snip - short for Single Nucleic Polymorphism)
A SNP mutation identifies a group who share a common ancestor far back in time. Since SNPs rarely mutate, each
member of a particular haplogroup has the same SNP mutation. The branches of the
tree are labeled A-R.
An mtDNA haplogroup is defined as all of the female descendants of the single person who first showed a
particular polymorphism, or SNP
Like Y-DNA SNP mutations, an mtDNA SNP mutation identifies a group who share a common ancestor far back in time.
The results of a DNA test will predict your placement on a branch of the phylogenetic tree. Where there is
ambiguity, an additional
test can be taken which will test for certain mutations that identify a haplotype.
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