The microtubules from the opposite poles of the spindle attach to the pair of homologous chromosomes in

1.	Metaphase - I
2.	Prophase - I
3.	Metaphase
4.	Metaphase - 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

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

The material, which arrests cell division, is obtained from:

Phage genome site on bacterial chromosome resulted in which structure?

1. Nucleic acid

2. heterocyst

3. Prophase

4. None of these

Which one of the following precedes re-formation of the nuclear envelope during the M-phase of the cell cycle?
 

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