【单选题】Once an Okazaki fragment has been completed in E. coli , its RNA primer is removed by _________________ or RNase H1, and replaced with DNA by the polymerase; the remaining nick is sealed by DNA ligase
【单选题】Our public debates often fly off into the wild blue yonder of fantasy. So it's been with the Federal Communications Commission's new media-ownership rules. We're told that, unless the FCC's decision i...