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18 mars 2022
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Claude Desplan, « Evolution of sensory perception », Annuaire du Collège de France, ID : 10.4000/annuaire-cdf.17899
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How do changes in cell fate affect the function and performance of nervous systems, in particular to adapt visual and olfactory systems to their environment? For example, butterflies have improved color vision compared to other insects such as Drosophila. I will discuss how this is achieved by duplicating the (R7) photoreceptor cell: Each of the two R7s makes a stochastic choice to express the transcription factor Spineless, leading to three stochastic types of ommatidia (Spineless on/on, on/...