TY - ADVS AU - Alon,Uri TI - Evolutionary tradeoffs and the geometry of gene expression space T2 - Systems biology, PY - 2014/// CY - London PB - Henry Stewart Talks KW - Bioinformatics KW - Biological models KW - Evolution (Biology) KW - Gene expression KW - Mathematical optimization KW - Molecular biology KW - Morphology (Animals) KW - Phenotype KW - Beak KW - anatomy & histology KW - Biological Evolution KW - Computational Biology KW - Evolution, Molecular KW - Fossils KW - Gene Expression KW - Genes, Bacterial KW - Genetic Fitness KW - Models, Biological KW - Models, Statistical KW - Selection, Genetic KW - Systems Biology N1 - Animated audio-visual presentation with synchronized narration; Title from title frames; Contents: Organisms, tissues and molecules often need to perform multiple tasks -- Usually no phenotype can be optimal at all tasks at once which leads to a fundamental tradeoff -- We study this using the concept of Pareto optimality from engineering and economics -- Tradeoffs lead to an unexpected simplicity in the range of optimal phenotypes; they fall on low dimensional shapes in trait space such as lines, triangles and tetrahedrons -- At the vertices of these polygons are phenotypes that specialize at a single task -- We demonstrate this using data from animal and fossil morphology, bacterial gene expression and other biological systems; Access restricted to subscribers UR - https://hstalks.com/bs/2938/ UR - https://hstalks.com/bs/p/876/ ER -