The enzyme recombinase is required at which stage of meiosis
1. Pachytene
2. Zygotene
3. Dipotene
4. Diakenesis

The complex formed by a pair of synapsed homologous chromosomes is called

1. Kinetochore

2. Bivalent

3. Axoneme

4. Equatorial plate

During gamete formation, the enzyme recombinase participates during
1. Metaphase-I
2. Anaphase-II
3. Prophase-I
4. Prophase-II

Given below is the representation of a certain event at a particular stage of a type of cell division. Which is this stage? 

1. Prophase-I during meiosis

2. Prophase-II during meiosis

3. Prophase of mitosis

4. Both prophase and metaphase of mitosis

During mitosis ER and nucleolus begin to disappear at

1. late prophase

2. early metaphase

3. late metaphase

4. early prophase

Which stages of cell division do the following figures A and B represent respectively? 

1. Metaphase- Telophase
2. Telophase- Metaphase
3. Late anaphase- Prophase
4. Prophase- Anaphase

Given below is a schematic break-up of the phases/stages of cell cycle 
   
Which one of the following is the correct indication of the stage/phase in the cell cycle?

1. B-Metaphase

2. C-Karyokinesis

3. D-Synthetic phase

4. A-Cytokinesis

Synapsis occurs between
1. a male and a female gamete
2. mRNA and ribosomes
3. spindle fibres and centromere
4. two homologous chromosomes

In 'S' phase of the cell cycle

1. amount of DNA doubles in each cell.

2. amount of DNA remains same in each cell

3. chromosome number is increased

4. amount of DNA is reduced to half in each cell.