Figure 2: Scatterplots of A260/280 and A260/230 absorbance ratios of DNA extracted from herptile specimens sold at traditional medicine markets. The log transformed (log10) x axes exclude 10 and 31 negative absorbance ratios from plots A and B respectively as logs of negative numbers cannot be calculated (in the legend, the ratios were not log transformed). Samples with negative absorbance ratios suggest the DNA extraction protocols require improvements, while extreme values (with square outlines) on the plots suggest the samples could have contaminants. Extreme values are ratios that are higher than the sum of the upper quartile (Q3) of the absorbance ratios added to the product of the interquartile range (IQR) multiplied by 1.5 (Outliers > Q3 + IQR X 1.5).