Meiotic (Me I or II) and mitotic (Mi) cells stained with DAPI. (A) Prophase I of Orobanche austrohispanica with ca. 38 bivalents (2n = 4x = 76). (B) Interphase nuclei of same species with two micronuclei (arrowheads). (C) Prophase I of O. densiflora with 38 bivalents (2n = 4x = 76). (D) Metaphase II of same species with unbalanced number of chromosomes in each nucleus (37 and 39). (E) and (F) metaphase plates with condensed and more distended chromosomes of O. gracilis with 2n = 4x = 76. Bars correspond to 5 μm.