Question

The DNA strand showing replication using Okazaki fragments also shows

• A. Continuous growth in $5^{\prime }\to 3^{\prime }$
• B. Discontinuous growth on $5^{\prime }\to 3^{\prime }$ parental strand
• C. Discontinuous growth on $3^{\prime }\to 5^{\prime }$ parental strand
• D. Involvement of one primer only

Answer 1

Answer: (B)

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'.