In a population of dividing cells, what are the major phases of the cell cycle, and what events occur during each phase?
Understand the Problem
The question provides a detailed explanation of the cell cycle, including its phases, events occurring during M phase, interphase, and G2 phase, and discusses how DNA replication and the timing of these phases are studied using radioactive labeling techniques.
Answer
The major phases of the cell cycle are G1, S, G2, and M. Key events: G1 - cell growth, S - DNA replication, G2 - prep for mitosis, M - mitosis and cytokinesis.
The cell cycle comprises four major phases: G1 (cell growth), S (DNA replication), G2 (preparation for mitosis), and M (mitosis and cytokinesis). During interphase (G1, S, G2), the cell grows and replicates its DNA. M phase involves the separation of chromosomes and division into two daughter cells.
Answer for screen readers
The cell cycle comprises four major phases: G1 (cell growth), S (DNA replication), G2 (preparation for mitosis), and M (mitosis and cytokinesis). During interphase (G1, S, G2), the cell grows and replicates its DNA. M phase involves the separation of chromosomes and division into two daughter cells.
More Information
Most eukaryotic cells follow these phases. During interphase (G1, S, and G2), cells prepare for division, while M phase involves chromosome separation and division.
Tips
Don't confuse the order of the phases or overlook the specific key events that define each phase.
Sources
- Phases of the cell cycle (article) | Khan Academy - khanacademy.org
- An Overview of the Cell Cycle - Molecular Biology of the Cell - NCBI - ncbi.nlm.nih.gov
- Cell Cycle Phase - an overview | ScienceDirect Topics - sciencedirect.com
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