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Figure 6 | BMC Evolutionary Biology

Figure 6

From: Similar patterns of rDNA evolution in synthetic and recently formed natural populations of Tragopogon(Asteraceae) allotetraploids

Figure 6

FISH to metaphase spreads of synthetic T. mirus. The probe labels and scale bar are as in Figure 4. Individuals 73-14 (A, B), 70-4 (C), and 73-13 (D) had four strong plus 0-2 very weak signals (dependent on particular metaphase and sample). (B) is an expanded region of (A) showing the large locus of T. dubius origin and the minute Dpo locus (arrowheads) left after the deletion of the majority of genes from the array. Lineages 98-1 (E), 134-15 (F), 116-1 (G), and 135-5 (H) showed regularly six 18S rDNA signals. The metaphase in (G) has largely decondensed Adu (arrows), partially decondensed Dpo (arrowheads), and fully condensed Apo loci.

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