Figure 2.

Alignment of the five major copy types of alpha tubulin in bdelloid rotifers. Classes based on intron presence/absence. Black block = exon, grey block = intron, line = gap. Copy classes 4, 5 and 3 contained variants with introns indicated by a, b and c respectively that were absent in copies otherwise sharing the same intron structure. Numbers of copies in each species are shown: A. ricciae (Ar), A. vaga (Av), M. quadricornifera (Mq) and P. flaviceps (Pf).

Eyres et al. BMC Evolutionary Biology 2012 12:148   doi:10.1186/1471-2148-12-148
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