Fig. 3
From: Introduction and transmission of SARS-CoV-2 lineage B.1.1.7, Alpha variant, in Denmark
The phylogenetic structure of the data behind the introduction lineage CA1. The data for introduction lineage CA1 and descendant transmission clusters as shown in Fig. 2B. Each point is colored according to region, branches without points are sequences from outside Denmark. Red dots indicate the root node of each cluster with labels. A The maximum likelihood tree with branch support indicated as percentage values generated from 1000 ultrafast-bootstrap iterations using the -B option in IQ-tree. Polytomy nodes are collapsed by “;” in the labels. B Time-scaled, pruned version of the tree in A used for ancestral state reconstruction