Paragroup is a term used in population genetics to describe lineages within a haplogroup that are not defined by any additional unique markers.
[1] Apart from the mutations that define the parent haplogroup, paragroups may not possess any additional unique markers.
Alternatively paragroups may possess unique markers that have not been discovered.
Until the SNP/UEP marker M293 was discovered in 2008, the members of the subclade were indistinguishable from other components of the paragroup E1b1b1* (also known as E3b* and E-M35*).
Phylogenetic tree of human mitochondrial DNA (mtDNA) haplogroups