Question
Biology Question on Genetics and Evolution
In which phase of the cell cycle does replication of DNA take place?
A
G1 phase
B
M phase
C
S phase
D
G2 phase
Answer
S phase
Explanation
Solution
DNA replication occurs during the S (Synthesis) phase of the cell cycle. During this phase, each chromosome is replicated to form two sister chromatids, which will be separated during mitosis. The S phase ensures that each daughter cell receives an exact copy of the DNA.