The replication of DNA is quite complicated and requires the participation of many different enzymatic activities.These include an RNA polymerase (DNA primase)that synthesizes short segments of RNA,called primers,which are base paired to the DNA template.The 3´-OH ends of these RNA primers serve as initiation sites for the actual DNA polymerase activity.Obviously,DNA primase can synthesize polynucleotides without the benefit of a 3´-OH primer;indeed,it can catalyze the hydrolysis and subsequent linkage of two nucleoside triphosphates without the need for a complementary strand whatsoever.The short segments of RNA must be eliminated and replaced with DNA before replication can be completed.Why do you think that RNA,rather than DNA,primers are employed in the DNA replication process?
Correct Answer:
Verified
View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
Q40: DNA replication begins at sequences called
A)promoters.
B)initiators.
C)origins.
D)Okazaki fragments.
Q41: Why is the enzyme reverse transcriptase found
Q42: What is the difference between lytic and
Q43: Many antibiotics,most of which have been isolated
Q44: To incorporate radiolabeled nucleotides into newly synthesized
Q46: Which parts of the newly synthesized mRNA
Q47: When the CAU anticodon of a tRNAᴹᵉᵗ
Q48: What is the difference between a nucleoside
Q49: If perfect Watson-Crick base pairing were demanded
Q50: Polio virus affects only intestinal cells and
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents