However, only a single copy of the gene is mutated in tumours, raising the possibility that the mutations do not result in a simple loss of function.

然而，在肿瘤中只有一个基因的单一复制出现突变，那就会增加突变的可能性而不仅仅是导致一个简单功能的丢失。

youdao

Transgenes should be with single copy and without accessory sequence, and with consistence to express and stable genetic in various transgenic plants in a new gene transformation program.

新的转化程序要求把基因导入农艺性状优良的品种中，呈单拷贝、不带有辅助序列，并在不同的转化体中表达一致，稳定遗传。

youdao

Transgenes should be genes with single copy and without marker gene, and be able to express and stable inheritable in various transgenic plants in a new gene transformation program.

新的基因转化程序要求转基因为单拷贝，不带有标记基因，并在不同的转化体中表达一致，稳定遗传。

youdao

If it is safe, the medicine could also be used for patients who have a single copy of the defective gene.

FORBES

Those who have a single copy of the bad gene still suffer from very elevated cholesterol and a high risk of heart attack, and might also use 301012.

FORBES: Cholesterol Comeback

Some 600, 000 Americans have the more common form of FH, which is caused by a single bad copy of the cholesterol gene and causes levels of cholesterol that are just above the upper limit of normal.

FORBES: Genzyme Eyes Isis Drug