base-pair

例句：

1. 1. DNA replication requires the recognition of base pairs.
   DNA复制需要识别碱基对。
2. 2.The genetic code is based on the four base pairs of adenine, thymine, guanine, and cytosine.
   遗传密码基于腺嘌呤、胸腺嘧啶、鸟嘌呤和胞嘧啶的四个碱基对。
3. 3. In molecular biology, base pairs are used to describe the arrangement of nucleotides in a doublehelix.
   在分子生物学中，碱基对用于描述双螺旋中核苷酸的排列方式。