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. 2014 Feb 13;10(2):e1004159. doi: 10.1371/journal.pgen.1004159

Figure 1. Karyotype and timecourse.

Figure 1

A) Karyotype of a Drosophila ancestor, D. pseudoobscura and D. miranda ancestor (and current karyotype of D. pseudoobscura), and D. miranda. B) Important transcriptional events in the early embryo, examples of embryo staging for the two species, based on morphology, and timing of these events in D. melanogaster at 25°C. MSL histone modification (mod.) refers to observation of the histone modification H4K16ac, mediated by the MSL complex, by antibody staining in D. melanogaster [13],[14].