{
  "id": 8381224,
  "title": "Testing for Shared Molecular-Evolutionary Signatures of Diurnality and Nocturnality in Mammalian Circadian Clock Genes",
  "url": "https://urgent.news/2026/09/18/testing-for-shared-molecular-evolutionary-signatures-of-diurnality",
  "topic": "science",
  "section": "Science",
  "published": "2026-09-18T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.09.17.752369v1?rss=1"
  },
  "original_language": "en",
  "account": null,
  "summary": "Following an ancestral nocturnal phase, diurnality evolved independently in multiple mammalian lineages after the Cretaceous-Palaeogene boundary. Whether these recurrent temporal-niche transitions drove convergent molecular evolution in the circadian oscillator remains largely untested. We analyzed 18 core clock genes and direct regulators across 60 diurnal and nocturnal mammals, identifying 10…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}