n DNA replication, the Okazaki fragments are joined by(A) DNA helicase(B) DNA ligase(C) DNA polymerase(D) DNA primase
Question
n DNA replication, the Okazaki fragments are joined by(A) DNA helicase(B) DNA ligase(C) DNA polymerase(D) DNA primase
Solution
In DNA replication, the Okazaki fragments are joined by (B) DNA ligase.
Here's a step-by-step explanation:
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DNA replication begins at specific sites called origins of replication. The two DNA strands are separated by an enzyme called DNA helicase, creating a replication fork.
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On the leading strand, DNA polymerase synthesizes a new strand of DNA in the direction of the replication fork, continuously.
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On the lagging strand, DNA synthesis occurs in a discontinuous manner, creating Okazaki fragments. This is because DNA polymerase can only add nucleotides in the 5' to 3' direction.
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These Okazaki fragments are then joined together by the enzyme DNA ligase, creating a continuous DNA strand.
So, the correct answer is (B) DNA ligase.
Similar Questions
Okazaki fragments are the result of DNA polymerisation ofGroup of answer choicesthe lagging strand towards the replication fork the lagging strand away from the replication fork the leading strand towards the replication fork the leading strand away from the replication fork
Which reaction in DNA replication is catalysed by DNA ligase?Group of answer choicesFormation of a phosphodiester linkage between two Okazaki fragmentsProof reading the template strand for errorsBase pairing of the template to the newly synthesised strandAddition of nucleotides to the lagging strand
During DNA replication:Ligase replaces RNA primers with DNA nucleotides.DNA polymerase III pairs Guanine with Cytosine.DNA polymerase I pairs Adenine with Cytosine.Okazaki fragments are created on the leading strand.
Many segments of these are joined together to make up the lagging strand of newly synthesized DNA.Group of answer choicesprimerOkazaki fragmenttelomereorigin of replicationNext
Match the enzymes to their role in the DNA replication process.RNA primaseligasehelicasepolymerasetopoisomeraseunwinds the DNA moleculesynthesizes the complementary daughter strandssynthesizes RNA primer at the initiation pointcreates nicks ahead of the replication fork to relieve tension from unwindingjoins the Okazaki fragments togetherReset Next
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