Is Evolution of Mating Preferences Inevitable? Random Mating in the Multisex System of Tetrahymena thermophila
Figure 2
Random mating among sexes in T. thermophila. Bar charts show the relative frequency of pairs formed between sexes. Sexes are represented in Arabic numbers. Panels (a): triplet 2, 4, 5; (b): triplet 2, 4, 7; (c): triplet 2, 5, 7; (d): triplet 4, 5, 7. y-axis shows the mean proportion from 12 replicates for each pair type, averaged over the three trials for a given triplet (Figure 1(b)). A total of 1152 pairs ( pairs per trial X4 replicates per trial X3 trials per triplet) were analyzed for each triplet. Dashed line indicates the proportion of pairs (~0.33) expected under random mating. Error bars indicate standard error. All triplets show evidence of random mating with respect to sex (mixed-effect ANOVA , Table 2).
