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Schematic overview of gametogenic pathways and aberrations in parental species and hybrids of both sexes. (A) Scheme of reproductive interactions among studied genomotypes and the types of resulting progeny. (B) Hypothetical gametogenic pathways before meiosis. (C) Observed stages of meiosis. Note that for methodological reasons, we studied the pachytene stage in both sexes, but that diplotene and metaphase I stages could be observed only in females and males, respectively.
