试题范例

5 ﹒ WhichofthefollowingmaybecutbyMDR，inwhichtheboxedbases aremethylated：a）CCGG b）CCGG c）AGCT d）AGCT 6 ﹒ E ﹒ coliprotectsitsownDNAfromdegrada：a）producingcertainenzymestoprotect.This activityisreferredtoas：a）alternativeactivityb）isozymeactivity c）staractivi ......