Question Detail

ZOO 101 ZOO 101 Past Questions Objective Question

Question

The amount of DNA in G1 phase of cell cycle is
Options
A Same as found in G2 phase
B Half the amount found in G2 phase
Correct Answer
C Double the amount found in G2 phase
D Four times the amount found in G2 phase
Correct Answer

Option B is the correct answer.

Detailed Explanation

During the G1 phase, the cell has a diploid (2n) amount of DNA, representing the unreplicated genome. During the S phase, DNA replication occurs, resulting in the G2 phase having twice the amount of DNA (4n). Therefore, the DNA amount in G1 is exactly half of that found in G2.

Hint

Consider when DNA replication occurs during the cell cycle.

Question Info