Figure 3From: Neutral genetic drift can alter promiscuous protein functions, potentially aiding functional evolutionFold changes in P450 activities with standard errors. The bar graphs show the fold change in activity of all 34 neutrally evolved P450 variants on all six substrates. This is the same data as in Figure 2, except these graphs also give error bars showing the standard errors in two separate measurements of the activities. In most cases the standard errors are much smaller than the activity changes themselves.Back to article page