Cell Cycle and Cell Division · Question 25

Bivalent or Tetrad formation is a characteristic feature observed during

1. Chiasmata in zygotene stage
2. Synaptonemal complex in zygotene stage
3. Chiasmata in Diplotene stage
4. Synaptonemal complex in Pachytene stage

With respect to metaphase, which of the following statements is incorrect?

1. Chromosomes lie at the equator of the cell
2. Complete disintegration of nuclear envelope takes place
3. Chromosomes are highly condensed
4. Metaphase chromosomes are made up of four sister chromatids held together by centromere

Which of the following stages of meiosis involves division of centromere?

1. Telophase II
2. Metaphase I
3. Metaphase II
4. Anaphase II

Match List-I with List-II. Choose the correct answer from the options given below.

1. (a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)
2. (a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
3. (a)-(iv), (b)-(ii), (c)-(iii), (d)-(i)
4. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)

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