2. DNA and RNA syntheses are similar in some aspects but different in others e Similar in fundamental chemical mechanism both are guided by a template, both have the same polarity in strand extension(5 to 3); both use triphosphate nucleotides (dnTP or nTP) o Different aspects: No primers are needed; only involves a short segment of a large DNA molecule; uses only one of the two complementary dna strands as the template strand no proofreading, subject to great variation(when, where and how efficient to start)2. DNA and RNA syntheses are similar in some aspects but different in others ⚫ Similar in fundamental chemical mechanism: both are guided by a template; both have the same polarity in strand extension (5` to 3`); both use triphosphate nucleotides (dNTP or NTP). ⚫ Different aspects: No primers are needed; only involves a short segment of a large DNA molecule; uses only one of the two complementary DNA strands as the template strand; no proofreading; subject to great variation (when, where and how efficient to start)