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Fig. 2 | Parasites & Vectors

Fig. 2

From: Holocentric chromosome evolution in kissing bugs (Hemiptera: Reduviidae: Triatominae): diversification of repeated sequences

Fig. 2

GISH results using Triatoma dimidiata genomic DNA (gDNA) probe (labelled in yellow-green) on chromosomes of different Triatoma species (labelled in red). a Self-GISH on own chromosomes of T. dimidiata (2n = 20A + X1X2Y): Second meiotic metaphase (MII). All chromatin presented scattered hybridization signals, but strong signals were observed only on the Y chromosome. b T. dimidiata: Early meiotic prophase showing dot hybridization signals at the chromosome ends of all autosomes and on the Y chromosome. c T. dimidiata: Early meiotic prophase with C-banding. C-Heterochromatin regions with the same distribution pattern as observed with the genomic probe in b. d T. rubrofasciata (2n = 22A + X1X2Y): MII. e T. nitida (2n = 18A + X1X2Y): Metaphase I (MI). f T. (Mepraia) spinolai (2n = 20A + X1X2Y): Diakinesis. In c-e, the Y chromosome exhibited strong hybridization signals. g T. infestans (2n = 20A + XY): MI. Strong hybridizations signals were observed on the Y chromosome and chromosomal ends of three bivalents. Scale-bars: 5 μm. Abbreviations: A, autosomes; MI, metaphase I; MII, metaphase II

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