Last Updated：2025/11/21

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(ecology) The theory that mitochondria and chloroplasts, which are organelles of eukaryotic cells, originated as independent organisms.

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endosymbiotic theory

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Source Word

endosymbiotic theory

Noun

uncountable

(ecology) The theory that mitochondria and chloroplasts, which are organelles of eukaryotic cells, originated as independent organisms.

Japanese Meaning

真核生物の細胞内小器官であるミトコンドリアや葉緑体が、元々は独立して生活していた生物から進化したという理論（内共生説）

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The endosymbiotic theory proposes that mitochondria and chloroplasts were once independent organisms before becoming organelles within eukaryotic cells.

Google Translation / DeepL Translation

内共生説は、ミトコンドリアや葉緑体がかつて独立した生物であり、その後真核細胞の細胞小器官になったことを説明する。

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(ecology) The theory that mitochondria and chloroplasts, which are organelles of eukaryotic cells, originated as independent organisms.

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endosymbiotic theory

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