Figure 3: Proportion of ecological factors that contribute to the three clusters.
From: Ecological factors drive natural selection pressure of avian aryl hydrocarbon receptor 1 genotypes
We calculated the proportion of ecological factors by dividing the number of “presence” in a cluster by the total number of “presence” in the matrix coding in Fig. 2. The “presence” number (n) of each ecological factor is noted in the bracket. Major contributing factors in each cluster were selected based on the higher proportion rather than the equal probability that affects the three clusters (33.3%).
