DNA Replication

Question

DNA replication
A)involves the copying of only the parts of a chromosome that encode protein.
B)occurs during the S phase in the cell cycle.
C)is constantly occurring in all the cells in your body.
D)converts the double helix to two single helices.

Accepted Answer

DNA replication occurs during the S phase of the cell cycle, which is when DNA is replicated in preparation for cell division.

Answer: C
 DNA replication is constantly occurring in all cells in the body, as cells need to constantly reproduce in order for the body to grow and replace damaged or dying cells.

Therefore, the correct answer is B and C.

Choice A is incorrect, as DNA replication involves the copying of the entire chromosome, not just the parts that encode protein. Choice D is also incorrect, as DNA replication results in two identical double helices, not two single helices.