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人為 じんい突然 とつぜん変異 へんいでした
jin'itotsuzenhen'ideshita

敬
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Noun
, 
Desu Copula

The polite past form of 人為突然変異

1. It was an artificially induced mutation.; It was a human-caused sudden mutation.

Past/Perfective
, 
Polite

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人為突然変異でした

人為突然変異でした【じんいとつぜんへんいでした】 Activity

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