Cell cycle checkpoints A checkpoint is a stage in the eukaryotic cell cycle at which the cell examines internal and external cues and "decides" whether or not to move forward with division.

Learn about mechanisms of cell cycle regulation and the major cell cycle checkpoints.

细胞如何在 G1 阶段结束时、G2 阶段结束时以及中途通过 M 阶段（主轴检查点）使用检查点来调节细胞周期。

The cell cycle is tightly regulated by checkpoints between the G1 and S phase, and between the G2 and mitosis. Key proteins, cyclin-dependent kinases and cyclins, control this process. Cyclins are …

In the article on cell cycle checkpoints, we looked at the why of cell cycle transitions: the factors that a cell considers when deciding whether or not to move forward through the cell cycle. These include …

The cell cycle is composed of interphase (G₁, S, and G₂ phases), followed by the mitotic phase (mitosis and cytokinesis), and G₀ phase.

Cancer is basically a disease of uncontrolled cell division. Its development and progression are usually linked to a series of changes in the activity of cell cycle regulators. For example, inhibitors of the cell …

Cómo las células usan los puntos de control al final de las fases G1 y G2 y a la mitad de la fase M (punto de control del huso) para regular el ciclo celular.

Check your understanding of the regulation of the cell cycle and cancer in this set of free, standards-aligned practice questions.

Regulation of cell cycle Explore how the cell cycle is controlled to ensure proper growth and division. Understand the role of checkpoints in monitoring DNA integrity and progression. Examine key …