Which of the following does not hold good for virusoids?

Absence of sequence homology does not hold well for virusoids.
Sequence homology is the biological homology between DNA, RNA, or protein sequences, defined in terms of shared ancestry in the evolutionary history of life.
Inference of homology from protein sequences provides an essential tool for analyzing protein structure, function and evolution.
Virusoids are circular single-stranded RNA. These are essentially viroids that have been encapsulated by a helper virus coat protein, also they are dependent on viruses for replication and encapsidation.