Paragroup is a term used in
population genetics to describe lineages within a
haplogroup that are not defined by any additional
unique markers. In
human Y-chromosome DNA haplogroups, paragroups are typically represented by an
asterisk (
*) placed after the main haplogroup. The term "paragroup" is a
portmanteau of the terms
paraphyletic haplogroup indicating that paragroups form paraphyletic subclades. Apart from the mutations that define the parent haplogroup, paragroups may not possess any additional unique markers. Alternatively pargroups may possess unique markers that have not been discovered. If a unique marker is discovered within a paragroup, the specific lineage is given a unique name and is moved out of the paragroup to form an independent subclade.