DNA证据导致了她的逮捕。

___DNA evidence led to her arrest.

最终，DNA测试显示他们没有血缘关系，因此他们可以结婚生子，而不会让整个社区议论纷纷。

In the end the ___DNA test showed that they weren't blood related and therefore they could get married and have children without having the whole neighbourhood gossiping about them.

科学家使用DNA来识别遗传疾病。

Scientists use ___DNA to identify genetic disorders.