AP BIOLOGY

CELL DIVISION

CELL DIVISION AND CANCEROUS CELLS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
During which phase of the cell cycle is DNA copied?
A
Interphase
B
Prophase
C
Anaphase
D
Cytokinesis
Explanation: 

Detailed explanation-1: -S phase : The replication phase is known as the S phase. DNA replication consumes the majority of the cell’s resources. All 46 chromosomes are duplicated in human cells.

Detailed explanation-2: -S phase is the period during which DNA replication occurs.

Detailed explanation-3: -During interphase, G1 involves cell growth and protein synthesis, the S phase involves DNA replication and the replication of the centrosome, and G2 involves further growth and protein synthesis.

Detailed explanation-4: -The interphase of a normal cell cycle will thus, consist of the G1 (Gap 1) phase, S (Synthesis) phase, and G2 (Gap 2) phase. The S phase is the phase in which replication of DNA will take place which is then followed by histones synthesis. This is the phase taking place between the G1 phase and G2 phase.

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