Question

As a piece of linear DNA is replicated, the leading strand will have _____ RNA primer(s) and the lagging strand will have _____ RNA primer(s).A. one; oneB. many; manyC. one; manyD. one; twoE. many; one

Answer 1

Answer:

The correct answer will be option-C

Explanation:

Replication is a complex process which makes copies or replicates the DNA in every organism present on the Earth.  Replication is an ATP dependent process which is catalysed by several enzymes including DNA helicase, polymerase, primase.

During replication, the two strands are synthesized from parent strand in which the strand which is synthesized in 5' to 3' direction is known as the leading strand which is continuous whereas another strand synthesized in 3' to 5' direction is known as lagging strand as it is produced in the lags.

Since in the leading strand DNA polymerase adds nucleotides at 3' end, therefore, it requires only one RNA primer which assists DNA polymerase to proceed the reaction whereas in the lagging strand since the strands are synthesized in the lags so possess many RNA primers so that DNA polymerase can bind.

Thus, option-C is the correct answer.