Cell Cycle and Cell Division

The fruit fly has 8 chromosomes (2n) in each cell. During interphase of Mitosis if the number of chromosomes at G1 phase is 8, what would be the number of chromosomes after S phase?

1. 32
2. 8
3. 16
4. 4

Which stage of meiotic prophase shows terminalisation of chiasmata as its distinctive feature?

1. Pachytene
2. Leptotene
3. Zygotene
4. Diakinesis

The centriole undergoes duplication during :

1. G2 phase
2. S-phase
3. Prophase
4. Metaphase

Some dividing cells exit the cell cycle and enter vegetative inactive stage. This is called quiescent stage (G0). This process occurs at the end of

1. G1 phase
2. S phase
3. G2 phase
4. M phase

Match the following with respect to meiosis Select the correct option from the following

1. (A)-(iv), (B)-(iii), (C)-(ii), (D)-(i)
2. (A)-(iii), (B)-(iv), (C)-(i), (D)-(ii)
3. (A)-(i), (B)-(ii), (C)-(iv), (D)-(iii)
4. (A)-(ii), (B)-(iv), (C)-(iii), (D)-(i)

Dissolution of the synaptonemal complex occurs during

1. Diplotene
2. Zygotene
3. Pachytene
4. Leptotene

Identify the correct statement with regard to G1 phase (Gap 1) of interphase

1. Cell is metabolically active, grows but does not replicate its DNA.
2. DNA synthesis or replication takes place.
3. Nuclear Division takes place.
4. Reorganisation of all cell components takes place.

Cells in G0 phase:

1. suspend the cell cycle
2. terminate the cell cycle
3. exit the cell cycle
4. enter the cell cycle

The correct sequence of phases of cell cycle is:

1. S G1 G2 M
2. G1 S G2 M
3. M G1 G2 S
4. G1 G2 S M

The stage during which separation of the paired homologous chromosomes begins is

1. zygotene
2. pachytene
3. diplotene
4. diakinesis