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Q.

During DNA replication, Okazaki fragments are formed on 

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a

the lagging strand away from the replication fork

b

the lagging strand towards replication fork

c

the leading strand towards replication fork

d

the leading strand away from replication fork

answer is C.

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Detailed Solution

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Okazaki's fragments are fragments of DNA strand (lagging strand of DNA) formed on template DNA strand with 5’  3’ polarity. These fragments are joined by DNA ligase, whose catalytic activity is seen away from replication fork.
(1) During DNA replication, Okazaki fragments are used to elongate the lagging strand away from the replication fork and not towards replication fork.
(2), (4) Leading stands are not associated with Okazaki fragments.

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