SSC
BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which is true of the lagging strand during DNA replication?
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DNA polymerase I adds nucleotides in a 5’
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DNA polymerase III adds nucleotides in a 5’
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DNA polymerase I adds nucleotides in a 3’
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DNA polymerase III adds nucleotides in a 3’
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Explanation:
Detailed explanation-1: -The lagging strand is a single DNA strand that, during DNA replication, is replicated in the 5′ – 3′ direction (opposite direction to the replication fork). DNA is added to the lagging strand in discontinuous chunks called ‘okazaki fragments’.
Detailed explanation-2: -Once the lagging strand template is sufficiently elongated, DNA polymerase can now add nucleotides that are complementary to the ends of the chromosomes. Thus, the ends of the chromosomes are replicated.
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