Which Of The Following Statements Correctly Describes The Timing Of Dna Synthesis?
Which Of The Following Statements Correctly Describes The Timing Of DNA Synthesis?
Answer: DNA synthesis, also known as DNA replication, occurs during the S phase (Synthesis phase) of the cell cycle. The cell cycle consists of several phases:
- G1 Phase (Gap 1): The cell grows and carries out normal functions.
- S Phase (Synthesis): DNA is replicated during this phase. Each chromosome duplicates to form two sister chromatids connected by a centromere.
- G2 Phase (Gap 2): The cell continues to grow and prepares for mitosis.
- M Phase (Mitosis): The cell divides into two daughter cells.
Summary: DNA synthesis takes place during the S phase of the cell cycle, which is crucial for cell division as it ensures each daughter cell receives an identical copy of the DNA.