SSC
BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What keeps the DNA strands apart during DNA replication?
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DNA gyrase
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DNA helicase
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DNA primase
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single-stranded binding proteins
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Explanation:
Detailed explanation-1: -To unwind DNA, helicase first binds to DNA and then cleaves the hydrogen bonds connecting base pairs to separate the strands of the helix. Then single-stranded binding protein attaches to the single-stranded DNA. Helicase unwinds the DNA helix and SSB protein keeps the strands apart.
Detailed explanation-2: -During DNA replication, SSB molecules bind to the newly separated individual DNA strands, keeping the strands separated by holding them in place so that each strand can serve as a template for new DNA synthesis.
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