Adenine will always bind with thymine and cytosine with guanine.

腺总是胸腺嘧结合，嘧结合。

This attaches methyl groups (a carbon atom and three hydrogens) to either adenine or cytosine, two of the four chemical bases that form the alphabet of DNA, depending on the gene involved.

该作用可以让甲基（由一个碳原子和三个氢原子组成）附着于腺或嘧上——组成DNA序列的四种主化学成分中的两种，到底附着的是哪种取决于涉到的基因种类。

Nucleotides of DNA are made out of a sugar deoxyribose, a phosphate, and one of the four nuclear bases: adenine, cytosine, guanine, and thymine or A, C, G, T for short.

DNA的核苷酸由脱氧核糖、磷酸以四个核碱基之一组成，分别是腺、嘧、胸腺嘧，或简称A、C、G、T。

It was known that DNA had four chemical components - called adenine, guanine, cytosine, and thiamine - and that these paired up in particular ways.

当时已经知道，DNA含有4种化学成分——腺、、嘧和胸腺嘧——这4种成分总是以特殊的配对方式排列。

Specifically, folic acid is important for making red blood cells, and thymine and cytosine, two of the four bases that make up DNA.

具体来说，叶酸对制造红细很重要，胸腺嘧和嘧是构成脱氧核糖核酸的四种碱基中的两种。

Nucleotides of DNA are made up of a sugar - deoxyribose, a phosphate, and one of the four nucleobases - adenine, cytosine, guanine, and thymine - or A, C, G, T for short.

DNA的核苷酸由一分子单糖-脱氧核糖、一分子磷酸四种核碱基之一的腺（A）、嘧（C）、（G）或胸腺嘧（T）组成。

The bases - the letters of the genetic alphabet - consist of the four nucleotides mentioned a page or two back: adenine, thiamine, guanine, and cytosine.

碱基——基因子母表中的字母——由前面我们提到的腺、、嘧吟和胸腺嘧4种核苷酸组成。

Guanine always pairs with cytosine and adenine always pairs with thymine.

总是嘧配对，腺总是胸腺嘧配对。

And in the States, Oregon has opened up the possibility of cytosine therapy for wellness, not for illness, but for wellness across the whole state and as has Colorado now.

在美国，俄勒冈州已开始探索嘧疗法用于健康保健，而非治疗疾病，而是面向全州范围的健康促进；科罗拉多州如今也已如此。

See, DNA is made up of four different building blocks called " bases" : adenine, cytosine, guanine, and thymine.

看，DNA 由四种称为“碱基”的不同构件组成：腺、嘧、和胸腺嘧。

If you look at DNA the bases that we have are cytosine, guanine, adenine and thymine.

如果你看脱氧核糖核酸，我们有的碱基是嘧、、腺和胸腺嘧。

These are the letters of RNA or the letters of DNA. Cytosine, guanine, adenine and uracil in RNA.

这些是核糖核酸（RNA）或脱氧核糖核酸（DNA）的字母。在RNA中，它们分别是嘧、、腺和尿嘧。

So you've got cytosine, guanine, adenine and uracil.

所以你有嘧、、腺和尿嘧。

Cytosine, guanine, adenine and thymine in DNA. The other difference here is in DNA. We actually have a double helix so those attach together.

在脱氧核糖核酸（DNA）中，含有嘧、、腺和胸腺嘧。这里的一个不同之处在于DNA，我们实际上拥有的是双螺旋结构，因此这些碱基对会相互配对连接。

And so in RNA, it's adenine, guanine, uracil and cytosine.

在核糖核酸中，它们是腺、、尿嘧和嘧。