Which of the following statements is not true for cancer cells in relation to mutations?
1. Mutations in proto-oncogenes accelerate the cell cycle.
2. Mutations destroy telomerase inhibitor
3. Mutations inactivate the cell control.
4. Mutations inhibit production of telomerase.

Which of the following statements is not true for cancer cells in relation to mutations?

Centromere is required for
1. Crossing over
2. Transcription
3. Cytoplasmic cleavage
4. Movement of chromosomes towards poles

Spindle fibres attach on to:                                                                                                                                
1. Kinetosome of the chromosome
2. Telomere of the chromosome
3. Kinetochore of the chromosome
4. Centromere of the chromosome

After meiosis I, the resultant daughter cells have

Crossing over takes place between which chromatids and in which stage of 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. $\mathrm{S}\to {\mathrm{G}}_1\to {\mathrm{G}}_2\to \mathrm{M}$

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