fig3
Figure 3. Phylogeny of coronaviruses. Phylogenetic tree based on partial nucleotide sequences of the RNA-dependent RNA-polymerase (RdRp) gene from 21 coronaviruses. Multiple sequence alignment was performed using Clustal Omega v1.2.2 (10 iterations), and the phylogenetic tree was constructed using the neighbor-joining method with the Jukes-Cantor model and 1,000 bootstrap replicates in Geneious Prime v2026.0.2.
