Jellyfish Hints at a 20-Hour Clock Beyond Traditional Clock Genes

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Source: Quanta Magazine
Jellyfish Hints at a 20-Hour Clock Beyond Traditional Clock Genes
Photo: Quanta Magazine
TL;DR Summary

A newly described hydrozoan jellyfish species off Japan keeps a self-sustained 20-hour cycle that governs sunset spawning, suggesting an alternate, non-traditional circadian mechanism that evolved without standard clock genes.

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