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Which matching of DNA ligase and helicase is correct?

Answer and explanation

Correct answer: Ligase joins DNA fragments and helicase unwinds DNA

DNA helicase unwinds the double helix by separating the complementary strands through disruption of hydrogen bonds. DNA ligase joins adjacent DNA fragments, such as Okazaki fragments, by forming phosphodiester bonds. Therefore, option B is correct. Option A reverses the functions of the two enzymes. Exam tip: remember helicase as the enzyme that opens the helix and ligase as the enzyme that joins fragments.

Related tags

Dna LigaseDna HelicaseDna ReplicationEnzymesOkazaki FragmentsLigase EnzymesPrinciples Of BiotechnologyBiotechnology

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