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What does “semi-discontinuous” DNA replication mean? Explain in words how the lagging DNA strand is replicated...

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Biology

What does “semi-discontinuous” DNA replication mean? Explain inwords how the lagging DNA strand is replicated in bacteria. Whatspecific enzymatic activities does DNA polymerase I have? Name eachactivity and explain its role in DNA replication. If DNA polymeraseI lacked its 3’-5’ exonuclease activity, what specific consequenceswith respect to DNA replication would be observed? Whatconsequences would be observed if, instead of DNA pol I, DNApolymerase III lacked its 3’-5’ exonuclease activity? Explain youranswers.

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4.2 Ratings (871 Votes)
i Semidiscontinuous DNA replication means that synthesis ofone daughter strand takes place continuously as replication iscontinuous in this strand whereas the synthesis of other daughterstrand takes place in discontinuous manner The replication iscontinuous on one template strand with polarity 35which is known as leading daughter strand the replication isdiscontinuous in the form of short okazaki fragments on othertemplate strand with polarity 53which is known as lagging daughter strandii The initiation of DNA elongation starts when the primerstrand is synthesized opposite to the parental strand The primeris 510 nucleotide long serves as a stepping stone to starterrorless    See Answer
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