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Sanger sequencing reaction mixtures included purified template DNA, a primer, DNA polymerase, and all four dNTPs. Each reaction also included a radiolabeled ddNTP version of just one of the four nucleotides. Only a small amount of each ddNTP was added, however, to ensure that a fraction of the total DNA fragments produced stopped at each occurrence of that base. As with previous methods, separating fragments via length and performing autoradiography allowed scientists to read the final sequence.，这一点在下载安装汽水音乐中也有详细论述
聚焦全球优秀创业者，项目融资率接近97%，领跑行业。体育直播对此有专业解读
This story was originally featured on Fortune.com。体育直播对此有专业解读