Cell Cycle & Cell Division - 21-06-223

In the cell cycle, mitosis occurs between –

• (a) G₁ and S phase

• (b) S and G₁ phase

• (c) S and G₂ phase

• (d) G₁ and G₂ phase

Which of the following phase of mitosis is essentially the reverse of prophase in terms of nuclear changes?

• (a) S-phase

• (b) Anaphase

• (c) Telophase

• (d) Interphase

The milestone that defines metaphase is when the chromosomes –

• (a) Separate

• (b) Are at the opposite poles

• (c) Line up

• (d) Cross over

Human males have __________ different types of chromosomes.

• (a) 23

• (b) 24

• (c) 46

• (d) 48

During mitotic anaphase, chromatids migrate –

• (a) From the poles of the cell toward the metaphasic plate

• (b) Toward the NM

• (c) Along with their side chromatids toward one pole

• (d) From metaphase plate towards the poles

Which one is false statement about G2-phase?

• (a) It is post-S and Pre M-phase

• (b) In this phase cell has quantity of DNA in each cell is 4C if the DNA in G₁ phase is 2C

• (c) In it G₀ resides

• (d) Proteins like tubulin is formed for mitosis as well as cell growth continues

Cell cycle is the character of –

• (a) Only bacteria

• (b) Only plants and animals

• (c) Only protists

• (d) All organisms

Mitosis is seen in –

• (a) Apical meristem

• (b) Lateral meristem

• (c) Intercalary meristem

• (d) All meristematic cells

Non-dividing cells like heart cells, neuron are in _________ phase

• (a) G₁

• (b) G₂

• (c) G₄

• (d) G₀

In prophase of mitosis, which one of the following events occurs in animal cells but not in plant cells?

• (a) Centrioles migrate to opposite sides of the nucleus

• (b) Homologous chromosomes do not associate

• (c) The nuclear envelope (membrane) breaks down

• (d) Nucleoli disappear