Figure 2.

Distribution of hexamer dissimilarity test results from pure and mixed-culture libraries. (a) Calculation of statistical parameters from cdfs A and B. Overlap in the upper tail of cdf_A with cdf_B and the lower tail of cdf_B with cdf_A are likely regions for error. We find the false-positive rate α where 1 - cdf_A intersects 0 [cdf_A(0)= 1 - α], and the false-negative rate β where cdf_B crosses 0. Also shown are the medians (μ) for each distribution, where cdf(μ) = 0.5. (b) Calibration curves for plant (A₁, Glycine and Medicago spp., solid black line) and stramenopile plus P. infestans EST (B₁, dashed black line) training sequences. Superimposed distributions of test results show dissimilarity differences for infected G. max (green) and axenic P. sojae mycelial and zoospore sequences (blue and cyan, respectively).