Cells which are not dividing are likely to be at

1.  G₁

2.  G₂

3.  G₀

4.  S-phase

Which of the events listed below is not observed during mitosis?

1.  Chromatin condensation
2.  Movement of centrioles to opposite poles
3.  Appearance of chromosomes with two chromosomes joined together at the centromere
4.  Crossing over

Select the correct statement about G₁ phase

1.  cell is metabolically inactive

2.  DNA in the cell does not replicate

3.  it is not a phase of synthesis of macromolecules

4.  cell stops growing