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The genomic origin of the unique chaetognath body plan
Nature, Published online: 13 August 2025; doi:10.1038/s41586-025-09403-2Genomic, single-cell transcriptomic and epigenetic analyses show that chaetognaths, following extensive gene loss in the gnathiferan lineage, relied on newly evolved genes and lineage-specific tandem duplications, not caused by a whole-genome duplication event, to shape their distinctive body plan.
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