Ploidy differences in sex-linked genes typically produce gene expression imbalances between the sexes. A two-sex plant offers a solution for the early stages of resolution of this gene expression imbalance, very much reminiscent of a model proposed for mammals 50 years ago.
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Bergero, R. How to solve the gender expression gap. Nature Plants 4, 637–638 (2018). https://doi.org/10.1038/s41477-018-0232-8
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DOI: https://doi.org/10.1038/s41477-018-0232-8