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NEET BIOLOGYCell Cycle and Cell Division Medium

Question

During which phase(s) of the cell cycle, does the amount of DNA in a cell remain at 4C level if the initial amount is denoted as 2C?

A

G0 and G1

B

G1 and S

C

Only G2

D

G2 and M

Step-by-Step Solution

During the S phase (Synthesis), DNA replication occurs, and the amount of DNA per cell doubles from 2C to 4C. During the G2 phase (Gap 2), the cell continues to grow and synthesizes proteins in preparation for mitosis, maintaining the DNA content at the 4C level , . Although the cell enters the M phase (Mitosis) with 4C DNA, this phase concludes with the division of the cell into two daughter cells (cytokinesis), reducing the DNA content back to 2C. Therefore, the phase where the DNA content remains constant at 4C throughout is the G2 phase.

Exam Context & Concepts Covered

This question aligns with the NEET BIOLOGY syllabus, specifically targeting concepts from Cell Cycle and Cell Division . Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.

BIOLOGYCell Cycle and Cell Division duringphasesamountremaininitial

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