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Figure 4 | BMC Evolutionary Biology

Figure 4

From: Chromosome spreading of associated transposable elements and ribosomal DNA in the fish Erythrinus erythrinus. Implications for genome change and karyoevolution in fish

Figure 4

Overview of the evolutionary karyotypic pathways proposed for karyomorphs A-D of Erythrinus erythrinus on the basis of their karyotypic features and FISH mapping results for karyomorphs A and D. The main chromosomal changes from the probable basal karyotype (2n = 54; 6m + 2st + 46a) are underlined. The upward schematic figure illustrates the chromosomal distribution of the 18S rDNA and 5S rDNA/Rex3 sequences in karyomorph A and the expanded distribution of the latter sites in karyomorph D, including the Y, X1 and the probable X2 chromosome. The different colors represent the probes used for FISH.

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