{"paper":{"title":"Precise spatial scaling in the early fly embryo","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.bio-ph"],"primary_cat":"q-bio.MN","authors_text":"Gentian Muhaxheri, Mariela Petkova, Martin Scheeler, Thomas Gregor, Victoria Antonetti, William Bialek","submitted_at":"2018-12-29T15:38:52Z","abstract_excerpt":"The early fly embryo offers a relatively pure version of the problem of spatial scaling in biological pattern formation. Within three hours, a \"blueprint\" for the final segmented body plan of the animal is visible in striped patterns of gene expression. We measure the positions of these stripes in an ensemble of 100+ embryos from a laboratory strain of Drosophila melanogaster, under controlled conditions. These embryos vary in length by only 4% (rms), yet stripes are positioned with 1% accuracy; precision and scaling of the pattern are intertwined. We can see directly the variation of absolute"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.11384","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}