But which histones unravel when depends on various influences.

但哪些组在什么时候分解取决于各种影响。

Think of how thread is wrapped around spool, that's kind of what histones look like.

想想线是如何缠绕到线轴，这就是组样子。

DNA is wound around proteins called histones, which enable cells to pack large amounts of DNA into our nucleus.

DNA 被缠绕在组上，这样细就能把大量 DNA 塞进细核里。

So, in addition to histone and DNA, you also have epigenetic markers.

所以，除了组和 DNA， 你还有表观遗传标记。

When DNA needs to be translated to make proteins, these histones unravel to let out a little bit of DNA at a time.

当DNA需要转换质时，这些组会在每次分散时分解出一点点DNA。

DNA tightly around a long filament of protein called histone. Coiling the molecule into a spring like that compresses it down.

DNA 紧紧围绕着称为组质长丝。像这样将分子盘绕成弹簧将其压缩。

But it also introduces a new problem: your DNA is wrapped SO tightly around the histone that your cell can’t access most of your genetic information anymore.

但它也引入了一个新问题：你 DNA 被组包裹得如此紧密，以至于你细无法再访问你大部分遗传信息。

These machines are called chromatin remodelers, and the way they work is that they basically scoot the DNA around these histones and they allow new pieces of DNA to become exposed.

这些“机器”被称为染色质重塑器，它们载着 DNA在组上移动，让新 DNA 片段暴露出。

Your DNA is made up of two strains that wrap around each other in the famous double helix structure, to get even more compact and tiny, that DNA is wrapped around little proteins called histones.

你DNA是由两个菌株组成，它们以著名双螺旋结构相互缠绕，变得更加紧密和微小，DNA被包裹在称为组小质上。