That is what a double helix looks like.

这就是二重螺旋线的形状。

Breaks appear in the double helix, destabilizing the genome further.

双螺旋上并发生断裂，使得基因组变得更不稳定。

They created the first double helix model of DNA in 1953. Photograph: ap.

他们在1953年构建了第一个DNA双螺旋结构。

Each messenger is an edited copy of one strand of the DNA double helix.

每个信使都是DNA双螺旋中一个单链的复制品。

Particularly when it comes to its structure — the stuff beyond the double helix.

尤其是对它结构(双螺旋线以外的结构)的研究。