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

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? 

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?

Synapsis occurs between:

Cells in ${\mathrm{G}}_0$ phase:
1. terminate the cell cycle
2. exit the cell cycle
3. enter the cell cycle
4. suspend the cell cycle

The correct sequence of phases in cell cycle is:

1. ${\mathrm{G}}_1\to \mathrm{S}\to {\mathrm{G}}_2\to \mathrm{M}$

2. $\mathrm{M}\to {\mathrm{G}}_1\to {\mathrm{G}}_2\to \mathrm{S}$

3. ${\mathrm{G}}_1\to {\mathrm{G}}_2\to \mathrm{S}\to \mathrm{M}$

4. $\mathrm{S}\to {\mathrm{G}}_1\to {\mathrm{G}}_2\to \mathrm{M}$

The enzyme recombinase is required at which stage of meiosis:
1. Pachytene
2. Zygotene
3. Diplotene
4. Diakinesis