Bio105 ch15 - Study guides, Class notes & Summaries

Who performed classic experiments that supported the semiconservative model of DNA replication? - Meselson and Stahl What separates the DNA strands during replication? - helicase A new DNA strand elongates only in the 5' to 3' direction because - DNA polymerase can only add nucleotides to the free 3' end. What is the role of DNA ligase in the elongation of the lagging strand during DNA replication? - It joins Okazaki fragments together

What is the function of DNA polymerase III? - to add nucleotides to the end of a growing DNA strand What is the function of topoisomerase? - relieving strain in the DNA ahead of the replication fork Which of the following covalently connects segments of DNA? primase DNA polymerase III DNA polymerase I ligase