1·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》
2·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。
3·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。
4·Cattle raising people in East Africa and northern Europe have gained a mutation that helps them digest milk as adults.
东非和北欧的养牛人发生了一种突变，帮助他们像成年人一样消化牛奶。
5·Their allele frequencies at numerous genetic loci gradually become more and more different as new alleles independently arise by mutation in each population.
随着新等位基因在每个群体中独立突变产生，它们在许多遗传位点上的等位基因频率逐渐变得越来越不同。