The dissertation can provide reference for the study on er-suffix mutation history about Beijing and mandarin dialect.

本文可为北方方言特别是北京话儿缀音变史的研究提供参考和语料。

youdao

Future generations unlucky enough to inherit a harmful mutation are history.

FORBES: Arguing Over Junk: Scientists Attack Each Other as Media Flub 'DNA Story of the Year'

We'd also need to know more about what a BRCA1 mutation means in the absence of family history.

CNN: What Angelina Jolie forgot to mention