移动端
微信搜“题王网”真题密题、最新资讯、考试攻略、轻松拿下考试
首页
词条
a
A free market is an economic system in which the price of goods and services is affected by supply and demand rather than controlled by a government. 这句话翻译成中文是()
限制性内切核酸酶 BglⅡ识别的序列为 A GATCT,BamHI 识别的序列为 GGATCC,用它们分别切割载体 DNA和供体 DNA,不必使酶失活,就可以直接通过黏性末端连接法进行连接。