Question

DNA replication occurs in which of the following stages?
A) $G_0$ & $G_1$
B) $G_2$ stage
C) S stage
D) Mitotic phase

Answer 1

DNA replication is the process by which a double stranded DNA molecule is copied to produce two identical DNA molecules.

Complete Answer:
A) $G_0$ & $G_1$: Depending on levels of nutrients energy and external factors, cells must decide to enter the cell cycle or move into a nondividing state which is known as $G_0$ phase whereas $G_1$ is the growth phase 1 or we can say it gap1.
B) $G_2$ stage: $G_2$ stage is the growth phase 2 or gap 2 of the cell. In this stage the cells continue to grow and produce new protein.
C) S stage: S stage is also known as synthetic phase. DNA replication occurs here and it occurs between $G_1$ and $G_2$ phases.
D) Mitotic phase : Mitosis & cytokinesis together define this division of the mother cell into two daughter cells that are genetically identical to each other.

Note: DNA replication is the one of the most primary and basic processes that occurs within a cell. Each strand of existing DNA acts as a template for replication to complete this. There were three types of mode in DNA replication A)conservative B)semi-conservative C)dispersive.