n.尿嘧啶，尿间二氮笨

Uracil is one of the four nitrogenous bases found in RNA.
尿嘧啶是RNA中发现的四种氮碱基之一。
The enzyme uracil DNA glycosylase removes uracil from DNA.
尿嘧啶DNA糖苷酶从DNA中去除尿嘧啶。
In DNA replication, uracil can sometimes replace thymine by mistake.
在DNA复制过程中，有时会错误地将尿嘧啶替换为胸腺嘧啶。
Uracil has a distinctive sweet smell, similar to that of pyrimidine.
尿嘧啶具有类似于嘧啶的特殊甜味。
After hydrolysis, the RNA molecule breaks down into its constituent nucleotides, including uracil.
水解后，RNA分子分解成其组成部分核苷酸，包括尿嘧啶。
Uracil and cytosine are both pyrimidines found in nucleic acids.
尿嘧啶和胞嘧啶都是核酸中发现的嘧啶。
The presence of uracil instead of thymine indicates an error in DNA transcription.
尿嘧啶代替胸腺嘧啶的存在表明DNA转录存在错误。
Scientists have created artificial life forms containing uracil-based DNA.
科学家已经创造出含有以尿嘧啶为基础的DNA的人造生命形式。
Uracil's chemical structure makes it susceptible to hydrolysis, which degrades RNA over time.
尿嘧啶的化学结构使其容易发生水解，随着时间的推移会降解RNA。
A mutation in a gene may result in the substitution of thymine with uracil, altering the genetic code.
基因突变可能导致胸腺嘧啶被尿嘧啶取代，从而改变遗传密码。