Fig. 1.

Dendrogram plots showing hierarchical clustering results using only the reference sequences in Set 1 (Table 2) with the cut-off parameter $C$ equal to $5\ast 10^{-4}$ (top), and using a set that merges 16 representative SARS-CoV-2 sequences and reference sequences with $C$ also set to $5\ast 10^{-4}$ (bottom). A number at the beginning of each virus name indicates the cluster that virus belongs to after clustering.