mutation
n. （动物或植物的）突变，变异；（基因结构突变产生的）突变体，突变型；（形式的）转变，改变；语流音变，变音
复数 mutations
例句
Scientists have found a genetic mutation that appears to be the cause of Huntington's disease.
科学家们已经发现一个似乎是亨廷顿病病因的遗传突变。
《柯林斯英汉双解大词典》
If a copy of a gene is a bit different from the original, that's called a genetic mutation.
如果一个复制的基因与原来的有些许不同，那就叫做基因突变。
Furthermore, the single copy of a founder mutation often confers a survival advantage on carriers.
此外，创始者突变的单一拷贝通常赋予携带者生存优势。
