Fig. 1
From: Nucleotide composition of the Zika virus RNA genome and its codon usage
Molecular phylogeny of ZIKV strains. The polyprotein ORFs were translated into the amino acid sequence and a hypothetical ancestral sequence, generated with FastML, was added to the alignment. The Most Recent Common Ancestor (MRCA) was predicted to have been around 91 years ago, see the results section for further details. We performed 1000 bootstrap replicates that support the robustness of the phylogenetic analysis. The Log Likelihood value (LnL) of tree building amounted to −11055.85. The scale bar indicates the number of amino acid substitutions per site