放射 ほうしゃ せん遺伝 いでん がくじゃなかったです
hōshasen'idengakujanakattadesu

Noun
Desu Copula

The polite, past negative form of 放射線遺伝学

1. Wasn't radiation genetics.

Past/Perfective
Negative
Polite
Casual Register
Genetics