新生 しんせい突然 とつぜん変異 へんいじゃありません
shinseitotsuzenhen'ijārimasen

Noun
Desu Copula
Negation Auxiliary

The polite negative form of 新生突然変異

1. It is not a new mutation.; It is not a de novo mutation.

Negative
Polite
Terminal Form
Genetics