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. 2012 Oct 4;8(10):e1002960. doi: 10.1371/journal.ppat.1002960

Figure 8. Alternative scenarios of karyotypic evolution in the An. gambiae complex.

Figure 8

(A) A chromosomal phylogeny based on the ancestral state of the “standard” karyotype of An. quadriannulatus [4], [7]. (B) A karyotypic evolution based on the ancestral position of the An. arabiensis karyotype inferred from the finding of the fixed 2La inversion in outgroup species [18]. Scenarios A and B assume an independent origin of the 2La′ inversion in An. merus. (C) A chromosomal phylogeny based on the established ancestry of the shared inversion 2La [20] and arrangements 2Ro and 2R+p (this study). The introgression of 2La from An. arabienstis to An. gambiae is shown in all three scenarios. Inversion fixation events are shown above and below arrows.