Upon examination,a cell is found to have twice as much DNA as the normal diploid state but is no longer in the process of replicating the DNA.All of the DNA is found within a single nucleus.Which stage of the cell cycle is this cell in?
A)M phase
B)S phase
C)G1 phase
D)G2 phase
E)cytokinesis

Question

Quizplus · Accepted Answer

The cell is not in S phase as it is not actively replicating its DNA. It cannot be in M phase or cytokinesis as it only has one nucleus, and those stages involve the division of the nucleus or cell. Therefore, the cell must be in G2 phase, which is the stage where the cell prepares for mitosis after the completion of DNA replication. The cell has twice as much DNA as the normal diploid state because it has already replicated its DNA in the S phase, but has not yet entered M phase.

Upon Examination,a Cell Is Found to Have Twice as Much