{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T14:20:35Z","timestamp":1753885235321,"version":"3.41.2"},"reference-count":97,"publisher":"World Scientific Pub Co Pte Ltd","issue":"03","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Bioinform. Comput. Biol."],"published-print":{"date-parts":[[2024,6]]},"abstract":"<jats:p> Recent computational modeling of early fruit fly (Drosophila) development has characterized the degree to which gene regulation networks can be robust to natural variability. In the first few hours of development, broad spatial gradients of maternally derived transcription factors activate embryonic gap genes. These gap patterns determine the subsequent segmented insect body plan through pair-rule gene expression. Gap genes are expressed with greater spatial precision than the maternal patterns. Computational modeling of the gap\u2013gap regulatory interactions provides a mechanistic understanding for this robustness to maternal variability in wild-type (WT) patterning. A long-standing question in evolutionary biology has been how a system which is robust, such as the developmental program creating any particular species\u2019 body plan, is also evolvable, i.e. how can a system evolve or speciate, if the WT form is strongly buffered and protected? In the present work, we use the WT model to explore the breakdown of such Waddington-type \u2018canalization\u2019. What levels of variability will push the system out of the WT form; are there particular pathways in the gene regulatory mechanism which are more susceptible to losing the WT form; and when robustness is lost, what types of forms are most likely to occur (i.e. what forms lie near the WT)? Manipulating maternal effects in several different pathways, we find a common gap \u2018peak-to-step\u2019 pattern transition in the loss of WT.\u00a0We discuss these results in terms of the evolvability of insect segmentation, and in terms of experimental perturbations and mutations which could test the model predictions. We conclude by discussing the prospects for using continuum models of pattern dynamics to investigate a wider range of evo-devo problems. <\/jats:p>","DOI":"10.1142\/s0219720024500112","type":"journal-article","created":{"date-parts":[[2024,5,17]],"date-time":"2024-05-17T14:22:30Z","timestamp":1715955750000},"source":"Crossref","is-referenced-by-count":0,"title":["Body plan evolvability: The role of variability in gene regulatory networks"],"prefix":"10.1142","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0509-6203","authenticated-orcid":false,"given":"Alexander V.","family":"Spirov","sequence":"first","affiliation":[{"name":"Lab Modeling of Evolution, I.\u00a0M.\u00a0Sechenov Institute of Evolutionary Physiology & Biochemistry, Russian Academy of Sciences, Thorez Pr. 44, St. Petersburg 2194223, Russia"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6301-1012","authenticated-orcid":false,"given":"Ekaterina 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