Figure 1 Signature mutations away from the inferred progenitor SARS-CoV-2 strain, in estimated order of appearance. Mapped refers to the count of the genomes that include all the mutations in the signature (path leading to the listed mutation from the root of the tree), and no other signature mutations; click on the node to view geographic distribution of the signature; click on the label to view the geographic distribution of just this one mutation. Size of the nodes ~ to the number of mapped genomes, thickness of branch ~ co-occurence proportion (mouse over to view). Click on variant (e.g. 2416C) to view this mutation on NextStrain.