The X chromosome has been thought to be mostly silent after meiosis in males. A new study reports that this is not the case for a set of multicopy genes often arranged in giant palindromes and highly expressed in spermatids.
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Disteche, C. The not-so-silent X. Nat Genet 40, 689–690 (2008). https://doi.org/10.1038/ng0608-689
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DOI: https://doi.org/10.1038/ng0608-689
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