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Fig. 10 | BMC Ecology and Evolution

Fig. 10

From: Evolutionary pattern of karyotypes and meiosis in pholcid spiders (Araneae: Pholcidae): implications for reconstructing chromosome evolution of araneomorph spiders

Fig. 10

Pholcinae, males, NORs (FISH) II. Figures a, c contain scheme of sex chromosome trivalent X1X2Y (red circle = signal formed by several NORs). Arrowhead = NOR bearing chromosome (b), bivalent (a, c) or trivalent (a), open arrowhead = sex chromosome-linked NOR, T = sex chromosome trivalent X1 = X1 chromosome, X2 = X2 chromosome, Y = Y chromosome, +  = signal formed by several NORs. a, b Muruta tambunan (X1X2Y). a Metaphase I, note a bivalent bearing a terminal NOR and sex chromosome trivalent with signal in region of chromosome pairing (see scheme). b Mitotic metaphase, the large X1 chromosome bears two terminal NORs, the X2 chromosome contains one terminal NOR. Chromosomes of a chromosome pair exhibit another terminal NOR; c Pholcus pagbilao (X1X2Y), metaphase I. Plate contains four NOR bearing bivalents and sex chromosome trivalent without signal (see scheme). Inset: metaphase II, NOR bearing pair, upper chromosome contains two terminal loci. Bar = 5 µm; inset 1 µm

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BMC Ecology and Evolution

ISSN: 2730-7182

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