But for the remaining .1%, one person might have an adenine where another person has a guanine.

但对于剩下0.1%，个人可能有腺而另个人有。

Adenine will always bind with thymine and cytosine with guanine.

腺总是与胸腺嘧啶结合，胞嘧啶与结合。

There are four bases: adenosine, thymine, cytosin, and guanine.

腺苷、胸腺嘧啶、胞嘧啶和。

The mirror is made from crystals of guanine.

镜子由晶体制成。

Some fish eyes use guanine—one of the chemical building blocks in DNA—and have white eyeshine.

些鱼使用——DNA 中种化学成分——并且有白色。

The rules of base pairing dictate that adenine always pairs with thymine, and cytosine always pairs with guanine.

碱基配对规则规定腺总是与胸腺嘧啶配对，胞嘧啶总是与配对。

Guanine crystals typically form into bulky prisms, but the crystals in the scallop's eye, form into perfect squares.

晶体通常形成庞大棱柱，但扇贝中晶体形成完美正方形。

DNA is made of four organic bases: adenine, guanine, cytosine, and thymine, or A, G, C, and T.

DNA 由四种有机碱基组成：腺、、胞嘧啶和胸腺嘧啶，即 A、G、C 和 T。

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”不同构件组成：腺、胞嘧啶、和胸腺嘧啶。

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、、胞嘧啶和胸腺嘧啶——这4种成分总是以特殊配对方式排列。

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——基因子母表中字母——由前面我们提到腺、、胞嘧吟和胸腺嘧啶4种核苷酸组成。

All living organisms are built from DNA. It is made from four blocks of chemicals called adenine (A), cytosine (C), guanine (G) and thymine (T).

所有生物体都是由 DNA 构成。它由四种化学物质组成，称为腺 (A)、胞嘧啶 (C)、 (G) 和胸腺嘧啶 (T)。

For example, you convert formaldehyde into a compound called formate, which helps make the nucleic acids adenine and guanine — two of the four building blocks of DNA.

举个例子，你把甲醛转化成种叫做甲酸化合物，它能帮助生成核酸腺和——这是 DNA 四个组成部分中两个。

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核苷酸由脱氧核糖、磷酸以及四个核碱基之组成，分别是腺、胞嘧啶、与胸腺嘧啶，或简称A、C、G、T。

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核苷酸由分子单糖-脱氧核糖、分子磷酸与四种核碱基之腺（A）、胞嘧啶（C）、（G）或胸腺嘧啶（T）组成。

You may be more familiar with its role in DNA, but crystalline guanine is also a highly reflective material that can be seen everywhere in nature, from fish scales to chameleon skin.

你可能更熟悉它在 DNA 中作用，但结晶也是种高反射材料，在自然界中随处可见，从鱼鳞到变色龙皮肤。

It's composed of long strands of nucleotides, each made up of a sugar molecule, a phosphate group, and one of four nitrogen bases: adenine (A), thymine (T), cytosine (C), or guanine (G).

它由长链核苷酸组成，每条核苷酸链由个糖分子、个磷酸基团和四个氮碱基之组成：腺 (A)、胸腺嘧啶 (T)、胞嘧啶 (C) 或 (G)。