Fig. 1
From: Rapid microevolution during recent range expansion to harsh environments
Bayesian inference population genetic structure of Ciona robusta in STRUCTURE. a K values from 2 to 5 based on the Red Sea population and other five populations; b K values from 2 to 3 based on four populations from the Red Sea, the Mediterranean sea and the Atlantic ocean, respectively. Each genotype is represented by a thin line, with proportional membership in different clusters indicated by different colors. Bold vertical lines separate collection sites, with sites ID as per Table 1