DNA Replication Is

Question

DNA replication is
A) a one-step process.
B) not carried out in prokaryotic cells.
C) not carried out by enzymes.
D) conservative.
E) semi-conservative.

Accepted Answer

DNA replication is semi-conservative, meaning that during the process each original strand of the double helix serves as a template to create a new complementary strand, resulting in two DNA molecules, each consisting of one old and one new strand. This was demonstrated by the famous Meselson-Stahl experiment in 1958. DNA replication is carried out by enzymes, including DNA polymerase, helicase, and primase, among others.