古代細胞進化成複雜大腦的漫畫指南

“肛門是智慧的先決條件,”一位生物學家說

Comic-style group of cells with big eyes and smiles, packed together into a spherical shape.

Maki Naro

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Comic section 2: Eventually, some cells evolved to specialize in cell-to-cell communication, leaving other jobs to other cells. This—or something like it—is how scientists imagine the first simple nervous systems came to be. But what’s the evidence? The oldest fossils with evidence of a nervous system date from the Cambrian period. But these nervous systems are too complicated to have been the first. Much simpler ones must have come earlier. How can we learn about those?

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鳴謝:Maki Naro(插圖)和 Tim Vernimmen;靈感來自“Getting Nervous: An Evolutionary Overhaul for Communication,《遺傳學年度評論》,2017年,以及“Evolution of Animal Neural Systems,《生態學、進化與系統學年度評論》,2017年。

本文最初發表於 Knowable Magazine,這是 Annual Reviews 旗下的獨立新聞專案。註冊 新聞通訊

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