{
  "annotation_id": "189b388c-b3d8-4a7f-b26f-0d31c64b58ae",
  "date_created": "2026-03-02T18:00:29.223000Z",
  "date_modified": "2026-03-02T18:00:29.223000Z",
  "file_hash": "1bf0f7bd8b7825d4a3d77a35024bb1d381b569d6d445ed1bb029dd35410f20e4",
  "private": false,
  "record": {
    "abstract": "Sexual reproduction presents significant challenges to formal treatment of\nevolutionary processes. A starting point for systematic treatments of\necological and evolutionary phenomena has been provided by the gene centered\nview of evolution which assigns effective fitness to each allele instead of\neach organism. The gene centered view can be formalized as a dynamic mean field\napproximation applied to genes in reproduction / selection dynamics. We show\nthat the gene centered view breaks down for symmetry breaking and pattern\nformation within a population; and show that spatial distributions of organisms\nwith local mating neighborhoods in the presence of disruptive selection give\nrise to such symmetry breaking and pattern formation in the genetic composition\nof local populations. Global dynamics follows conventional coarsening of\nsystems with nonconserved order parameters. The results have significant\nimplications for the ecology of genetic diversity and species formation.",
    "arxiv_id": "physics/0004025",
    "authors": [
      "Hiroki Sayama",
      "Les Kaufman",
      "Yaneer Bar-Yam"
    ],
    "categories": [
      "physics.bio-ph",
      "q-bio"
    ],
    "doi": "10.1103/PhysRevE.62.7065",
    "title": "Symmetry breaking and coarsening in spatially distributed evolutionary   processes including sexual reproduction and disruptive selection",
    "url": "https://arxiv.org/abs/physics/0004025"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9060a616-5942-4a4c-9025-eea0a0af4026",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}