Cell Cycle: Understanding the Stages of Mitosis
Which of these phases includes all of the stages of mitosis but no other events?
A) C E B D A
B) The Mitotic phase consists of Mitosis and Cytokinesis, which are divisions of the nuclear material and cytoplasm respectively.
C) The Interphase is the phase where the cell enlarges in size, replicates its DNA, organelles, and generally prepares for the mitotic phase. This process occurs in the G1, S, and G2 phases of the Interphase.
Answer:
The phase that includes all of the stages of mitosis but no other events is represented by sector E in part A, which corresponds to the Mitotic phase.
The cell cycle describes all the series of events that occur in a cell from its DNA replication to its cytoplasmic division. It consists of two main phases: the Interphase and the Mitotic phase.
The Interphase is the resting stage between two successive divisions and is made up of three phases: G1, S, and G2 phases. This is the phase where the cell enlarges in size, replicates its DNA, organelles, and prepares for the upcoming mitotic phase.
The Mitotic phase is where the actual division of the cell occurs. It consists of two main events: Mitosis (nuclear division) and Cytokinesis (cytoplasmic division).
In the given pie chart, part C represents the Interphase with three sectors: G1, S, and G2 phases. Part A represents the Mitotic phase with two sectors: mitosis and cytokinesis. Sector E in part A corresponds to mitosis, which includes all the stages of mitosis - Prophase, Metaphase, Anaphase, and Telophase.
Understanding the different stages of the cell cycle, particularly mitosis, is crucial in comprehending how cells divide and replicate. This knowledge is fundamental in fields such as biology, genetics, and medicine.