Checkpoints occur between the stages of the cell cycle. If a cell does not meet certain criteria at the end of a stage, it will not move to the next stage.

Which of these occurs just before the cell enters the G2 stage of the cell cycle?

The nuclear membrane disintegrates.

DNA replicates.

Centrioles form.

The nucleolus divides.

The S phase of the interphase is the only stage in which DNA replicates. It occurs after the G1 stage and before G2. Option B is correct. DNA replicates.

What is the interphase?

The iterphase is the phase before the cell divides by mitosis or meiosis.

The interphase is composed of the G1, S, and G2 stages.

During the G1 stage, the cell duplicates in size. The organelles and other cytoplasmatic structures duplicate. The high intense biochemical activity is characteristic of this stage.

During the S stage occurs the DNA replication process. This is the only stage in which DNA molecules get replicated. Other molecules, such as histones and other associated proteins are synthesised.

The G2 stage is the final one before the cellular division. Here begins the slow process of DNA condensation. Duplication of centrioles completes. Structures such as spindle fibers are assembled.

According to this information, Option B occurs before the G2 stage. DNA replicates -S phase-.

You will learn more about the interphase at

https://brainly.com/question/17485110

https://brainly.com/question/13622952