嘧啶

mìdìng

noun

Meanings

HSK 7-9

胞嘧啶、胸腺嘧啶和尿嘧啶都属于嘧啶。

Bāomìdìng, xiōngxiànmìdìng hé niàomìdìng dōu shǔyú mìdìng.

Cytosine, thymine and uracil are all pyrimidines.

HSK 7-9

在双螺旋结构中，嘌呤总是和嘧啶配对。

Zài shuāngluóxuán jiégòu zhōng, piàolìng zǒngshì hé mìdìng pèiduì.

In the double helix, a purine always pairs with a pyrimidine.

usage

The DNA and RNA bases fall into two families: 嘌呤 'purines', with two rings (腺嘌呤 A, 鸟嘌呤 G), and 嘧啶 'pyrimidines', with one (胞嘧啶 C, 胸腺嘧啶 T, 尿嘧啶 U).

嘧 mì

啶 dìng