Figure 1

GC content against SSU rRNA fragment length. (Fragment corresponds to A. queenslandica positions 48–1896). A ca. 95% -fragment of SSU rRNA was used for analysis and only sequences with sequence information over the whole range of this fragment were considered (n = 123). Note that Farrea occa (Hexactinellida, [GenBank: AF159623]) is an incomplete potential pseudogene sequence.