Figure 2From: Divergent adaptation promotes reproductive isolation among experimental populations of the filamentous fungus NeurosporaMycelial growth rates of evolved lineages from Experiment L (a) and Experiment H (b) at assay point 7. Growth rates were normalized over the growth rate of the fastest parental progenitor in each of the three environments. Asterisks indicate means that were significantly different than 1.0, as determined by t-tests (see Methods). Errors bars are standard error (n = 6).Back to article page