Assertion: virus | /r/HasProperty | replicating lineage
Facets:
Source sentences:
text: In 1991, the more specific principle that a virus species is a polythetic class of viruses that constitutes a replicating lineage and occupies a particular ecological niche was adopted.
text: 5) Species (virus); The definition accepted by ICTV is "a virus species is defined as a polythetic class of viruses that constitutes a replicating lineage and occupies a particular ecological niche".