Self Assessment Answer # 2
for Lesson 2

by Dr Jamie Love © 2002 - 2005
Genetics Course

Interphase is divided into:

  1. G1 (or Gap 1) occurs after cytokinesis - the last cell division - but before the start of DNA synthesis. This is where the cell spends most of its time doing whatever the cell is meant to do.
  2. S phase (or Synthesis phase) is the time when DNA is synthesized. This ensures that the mother cell will pass on identical copies of "her" genetic materials to both of her daughter cells later on.
  3. G2 (or Gap 2) occurs after S phase but before the next M phase. At this point the cell is getting ready for M phase by providing the necessary materials for mitosis or meiosis.

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