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Q.

Choose the correct statement with respect to DNA replication.

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a

Deoxyribonucleoside triphosphates serve as substrates and main source of energy.

b

ATP serves as main source of energy.

c

On DNA template with 3' - 5' polarity, the synthesis of daughter DNA strand is discontinuous

d

On DNA template with 5' - 3' polarity, the synthesis of daughter DNA strand is continuous.

answer is A.

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Detailed Solution

ATP is not the main source of energy in DNA replication. It is used to break hydrogen bonds by the catalytic activity of helicase after the formation of replication fork. On one DNA template with 3' - 5' polarity, the synthesis of daughter DNA strand is continuous. On another DNA template with 5' - 3' polarity, the synthesis of daughter DNA strand is discontinuous.

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Choose the correct statement with respect to DNA replication.