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Meiotic chromosomes of male Panorpa emarginata subjected to hematoxylin staining. A pachytene B late prophase I showing the dot-shaped X univalent (arrow) and achiasmatic bivalents C metaphase I showing substantially more condensed chromosomes D lateral view of metaphase I showing congression of autosomal bivalents and precocity of X univalent (arrow) E, F lateral view of anaphase I showing precocity of X univalent (arrow). Bars = 10 μm.
