The substitution of a purine for a pyrimidine, or vice versa is a transversion.

嘌呤为嘧啶取代或嘧啶为嘌呤所取代，叫做颠换。

The substitution of a purine for a pyrimidine, or vice versa is a transversion .

嘌呤为嘧啶取代或嘧啶为嘌呤所取代，叫做颠换。

Uracil -- a pyrimidine found in RNA that base - pares with adenine.

尿嘧啶 -- 核糖核酸中的一种嘧啶,与腺嘌呤形成碱基对.

Study on the synthesis of 2 - diethylamino - 6 - methyl - 4 - hydroxy pyrimidine.

二乙氨基 -6- 甲基 -4- 羟基嘧啶的合成研究.

Cleudine is a pyrimidine analogue with potent and sustained antiviral activity against HB.

克来夫定为嘧啶类似物,对HB具有持续有效的抗病毒活性.

Hydrogen bonds play important roles to living organisms containing pyrimidine - based derivatives.

氢键对含有以嘧啶为基的衍生物的生命体具有重要作用.

Clevudine is a pyrimidine analogue with potent and sustained antiviral activity against HBV.

克来夫定为嘧啶类似物,对HBV具有持续有效的抗病毒活性.

Breeding a high pyrimidine producting grain is the precondition for producting cytidine and uridine by fermentation.

选育嘧啶核苷高产菌是实现发酵法生产胞苷、尿苷的前提.

What evidence do we have that in the helical form of the DNA molecule the base pairs are composed of one purine and one pyrimidine?

我们有什么证据表明在DNA分子的螺旋构型中，在每一个碱基对中都含有一个嘌呤碱基和一个嘧啶碱基？

UV-B-induced cyclobutane pyrimidine dimmers (CPD) in the DNA of rice seedlings were measured using ELISA with specific monoclonal antibody.

采用单克隆抗ELISA检测了UV-B对水稻叶片CPD的诱导形成及温度的影响。