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Question

The DNA strand showing replication using Okazaki fragments also shows

A
Continuous growth in 53
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B
Discontinuous growth on 53 parental strand
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C
Discontinuous growth on 35 parental strand
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D
Involvement of one primer only
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Solution

The correct option is B Discontinuous growth on 53 parental strand
Out of the two DNA strands, the one that is in 5'-3' polarity undergoes replication through the formation of the Okazaki fragments. There occurs the discontinuous growth on 5'-3' parental strand.
A. Continuous growth occurs on the 3'-5' parental strand.
B. Discontinuous growth occurs on 5'-3' parental strand using the Okazaki fragments.
C. Discontinuous growth on 3'-5'parental strand does not occur.
D. Involvement of only one primer is in the replication of 3'-5' strand and not on the strand that uses the Okazaki fragments.
Hence, the correct answer is 'Discontinuous growth on 5'-3' parental strand'.

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