In 'S' phase of the cell cycle

Options

A. amount of DNA doubles in each cell
B. amount of DNA remains same in each cell
C. chromosome number is increased
D. amount of DNA is reduced to half in each cell

Answer

A

Explanation

S- phase is the synthesis phase in which the cell synthesise a replica of its genome, i.e. DNA replication occurs by DNA polymerase.
DNA replication along with the synthesis of histone proteins results in the duplication of chromosomal material, i.e., amount of DNA doubles in each cell.
Amount of DNA remains unchanged during `G_(1)` - phase or post mitotic gap and /or `G_(2)` - phase or pre mitotic phase.