During the replication of DNA molecules?

A) both strands of a molecule act as templates


B) the reaction is catalyzed by RNA polymerase


C) errors never occur


D) the cell undergoes mitosis

During the replication of DNA molecules?
A is correct.


You need two copies for the two daughter cells-to-be, so you need two templates.





B: RNA polymerase makes RNA, not DNA. Hence, it's name.


C: Sure errors occur. See: cancer, evolution, mutation.


D: The cell replicates DNA to prepare for mitosis. It naturally does not enter mitosis until the DNA is replicated.
Reply:A) is correct. Both strands act as templates since one is used to make the new mother strand, and the other one to make the other daughter strand that it needs.
Reply:A is the right answer, because we are talking replication, not transcription. During replication the two strands are split and then DNA!!! polymerase (as opposed to RNA polymerase makes the two strands into two new complete DNA strands.


This happens before mitosis, and errors do occur, although they are usually fixed
Reply:B. Polymerase is a huge deal when it comes to replication.





A is wrong: Only one strand acts as the template. (Semi conservative)


C is wrong: Errors can always occure-mutations.


D is wrong: err-- makes no sense.