Tymovirus [SEP] parent taxon
Tymovirus
Tymovirus is a genus of viruses in the order "Tymovirales", in the family "Tymoviridae". Plants serve as natural hosts. There are currently 27 species in this genus including the type species Turnip yellow mosaic virus.
Taxonomy.
Group: ssRNA(+)
Structure.
Viruses in Tymovirus are non-enveloped, with icosahedral and isometric geometries, and T=3 symmetry. The diameter is around 30 nm. Genomes are linear, around 6.3kb in length.
Life cycle.
Viral replication
Taxon in disguise
In bacteriology, a taxon in disguise is a species, genus or higher unit of biological classification whose evolutionary history reveals has evolved from another unit of similar or lower rank, making the parent unit paraphyletic. This happens when rapid evolution makes a new species appear radically different from the ancestral group, so that it is not (initially) recognised as belonging to the parent phylogenetic group, leaving the latter an evolutionary grade.
While the term is from bacteriology, parallel examples are found throughout the tree of