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PhreeNews > Blog > World > Science > An historical genome duplication occasion drives the event and evolution of spinnerets in spiders
Australian garden orb weaver spider spinneret.jpg
Science

An historical genome duplication occasion drives the event and evolution of spinnerets in spiders

PhreeNews
Last updated: January 27, 2026 4:54 pm
PhreeNews
Published: January 27, 2026
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An historical genome duplication occasion drives the event and evolution of spinnerets in spiders

Summary

Key appendage improvements have pushed the origin and growth of arthropods, reminiscent of spinnerets enabling spiders to occupy three-dimensional house and diversify into greater than 53,000 species. Right here, we examine the genetic foundation of spinneret emergence in spiders by analyzing the advanced historical past and practical significance of arachnid genome evolution. Utilizing chromosome-scale genomes from newly sequenced spiders and the whip scorpion, we combine proof from macrosynteny and phylogenetic analyses to offer additional robust assist for a whole-genome duplication (WGD) occasion that occurred throughout early Arachnopulmonata evolution. Following this occasion, the abdominal-A gene pair not solely reveals practical divergence but additionally collectively facilitates the emergence of spinnerets. Moreover, we built-in single-cell transcriptomic analyses and practical validation to substantiate that the dachshund-1 gene additionally regulates spinneret growth. The community of duplicated gene pairs could kind a cornerstone within the origin and evolution of key morphological traits, revealing that the long-term results of historical WGDs on innovation and diversification additionally occurred in arthropods.

Li, F., Yang, H., Zhang, Y., Wang, S., Gu, Q., Wu, M., Jin, P., Huang, X., Zhong, Y., Huang, X., Lin, Y., Guo, X., Li, Y., Zhang, W., & Li, S. (2026). An historical genome duplication occasion drives the event and evolution of spinnerets in spiders. Science Advances. https://doi.org/adw2173

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TAGGED:AncientdevelopmentDrivesduplicationEventEvolutionGenomespidersspinnerets
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