Question

Which phase of cell cycle is the shortest phase in terms of time?

• A. G₁
• B. S
• C. M
• D. G₂

Answer 1

The Correct Option is C

The question asks for the shortest phase in the cell cycle in terms of time. To determine this, let's explore each phase:

• G₁ Phase: This is the first gap phase where the cell grows and prepares to duplicate its DNA. Protein synthesis and organelle production occur. This phase is relatively long to ensure the cell is ready for DNA synthesis.
• S Phase: The synthesis phase where DNA replication occurs. This ensures the cell's genetic material is duplicated accurately.
• G₂ Phase: This second gap phase involves further growth and preparation for mitosis, including the synthesis of proteins necessary for cell division. Like G₁, this phase is also relatively long.
• M Phase (Mitosis): This is the phase where cell division occurs. It includes prophase, metaphase, anaphase, telophase, and cytokinesis. This phase is the shortest as it is focused on physically separating the replicated chromosomes and dividing the cell into two daughter cells.

The correct answer is: M Phase. It is the shortest phase due to the rapid series of events that culminate in cell division. In comparison, the other phases (G₁, S, and G₂) consist of preparation steps that each take more time.