Meiosis occurs in organism during
1. Sexual reproduction 
2. Vegetative reproduction
3. Both sexual and vegetative reproduction
4. None of these above

During anaphase I of meiosis
1. Homologous chromosomes separate 
2. Non-homologous autosomes separate
3. Sister chromatids separate
4. Non-sister chromatids separate

Meiosis is characterised by
1. Reduction division 
2. Equal division
3. Both reduction and equal division
4. None of these

A bivalent of meiosis- I consists of
1. Two chromatids and one centromere
2. Two chromatids and two centromeres
3. Four chromatids and two centromeres
4. Four chromatids and four centromeres

Cells which are not dividing are likely to be at

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 chromattids joined together at the centromere
4. Crossing over

Identify the wrong statement about meiosis
1. Pairing of homologues chromosomes
2. Four haploid cells are formed
3. At the end of meiosis the number of chromosomes are reduced to half
4. Two cycle of DNA replication occurs 

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

In bacteria the cell cycle is divided into:
1. Only 1 phase
2. Two stages
3. Three periods
4. Four classes

The G₀ stage of the cell cycle is irreversible in:
I. Quiescent cells
II. Senescent cells
III. Terminally differentiated cells

1. I and II only
2. I and III only
3. II and III only
4. I, II and III