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MCAT Biology Question — Meiosis and Mitosis

Which of the following phases are common to cells undergoing meiosis and mitosis?

  1. G1 phase
  2. G2 phase
  3. M phase


  1. I only
  2. I and III only
  3. II and III only
  4. I, II, and III
Click for Explanation

This question asks the examinee to determine phases within the cell life cycle common to both mitotic-dividing cells and meiotic-dividing cells. The cell cycle is composed of interphase and M phase. In both meiotic- and mitotic-dividing cells, interphase includes the G1, S, and G2 phases, and in highly specialized cells, such as neurons, a G0 phase. Both cell types go through the M phase as either meiosis or mitosis. Thus, I, II and III are correct, making answer choice D the best answer.

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