Skip to main content
Figure 6 | BMC Evolutionary Biology

Figure 6

From: An efficient method to find potentially universal population genetic markers, applied to metazoans

Figure 6

Correspondence analysis representing the bilaterian genera according to their results for each intron. Nulls, A, I and P were respectively scored as 0,1,2 and 3. Methodological changes such as (i) adding cnidarians (therefore reducing the number of variates from 52 to 22 or 29), (ii) considering nulls (scored as 0) versus all amplifying categories (1) or (iii) changing the nature of the multivariate analysis did not change the pattern. When included in analyses, the two cnidarians appeared neither to form a tight group, nor to be outliers relative to bilaterian phyla. Empty symbols represent genera of the Echinodermata (stars, circles and ovoids intuitively represent ophiuroids, regular sea uchins and irregular sea urchins, respectively), black triangles represent ascidians (Urochordata) and black squares represent the two bilvalves (Mollusca).

Back to article page