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Cell Cycle and Cell Division · Question 43

NEET 2016 (Phase 1)MCQEasy📈 Topic in 75% papers+4−1
1

Which of the following is not a characteristic feature during mitosis in somatic cells?

  1. Chromosome movement
  2. Synapsis
  3. Spindle fibres
  4. Disappearance of nucleolus

Answer

(2) Synapsis

Solution

As per NCERT, synapsis is the pairing of homologous chromosomes during zygotene of prophase I of meiosis.

⇒ Homologous chromosomes do not pair in mitosis.

∵ Chromosome movement, spindle fibres and disappearance of the nucleolus are all seen in mitosis,

∴ synapsis is not a feature of mitosis.

Answer: (2)

NEET 2016 (Phase 1)

Keep practising — Cell Cycle and Cell Division

2

In meiosis crossing over is initiated at

  1. zygotene
  2. diplotene
  3. pachytene
  4. leptotene.
NEET 2016 (Phase 1)
3

During cell growth, DNA synthesis takes place on

  1. S-phase
  2. G1-phase
  3. G2-phase
  4. M phase
NEET 2016 (Phase 2)
4

When cell has stalled DNA replication fork, which checkpoint should be predominantly activated?

  1. G1/S
  2. G2/M
  3. M
  4. Both G2/M and M
NEET 2016 (Phase 2)
5

Match the stages of meiosis in column I to their characteristic features in column II and select the correct option using the codes given below.

  1. (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
  2. (a)-(i), (b)-(iv), (c)-(ii), (d)-(iii)
  3. (a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)
  4. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
NEET 2016 (Phase 2)
6

Arrange the following events of meiosis in correct sequence (i) Crossing over (ii) Synapsis (iii) Terminalisation of chiasmata (iv) Disappearance of nucleolus

  1. (i), (ii), (iii), (iv)
  2. (ii), (iii), (iv), (i)
  3. (ii), (i), (iv), (iii)
  4. (ii), (i), (iii), (iv)
AIPMT 2015
7

A somatic cell that has just completed the S phase of its cell cycle, as compared to gamete of the same species, has

  1. twice the number of chromosomes and four times the amount of DNA
  2. four times the number of chromosomes and twice the amount of DNA
  3. twice the number of chromosomes and twice the amount of DNA
  4. same number of chromosomes but twice the amount of DNA.
AIPMT 2015 (Cancelled)
8

Select the correct option.

  1. (A) - (i); (B) - (ii); (C) - (v); (D) - (iv)
  2. (A) - (ii); (B) - (iii); (C) - (iv); (D) - (v)
  3. (A) - (ii); (B) - (i); (C) - (iii); (D) - (iv)
  4. (A) - (ii); (B) - (iii); (C) - (v); (D) - (iv)
AIPMT 2015 (Cancelled)
9

During which phase(s) of cell cycle, amount of DNA in a cell remains at 4C level if the initial amount is denoted as 2C?

  1. G0 and G1
  2. G1 and S
  3. Only G2
  4. G2 and M
AIPMT 2014
10

In 'S' phase of the cell cycle

  1. amount of DNA doubles in each cell
  2. amount of DNA remains same in each cell
  3. chromosomes number is increased
  4. amount of DNA is reduced to half in each cell.
AIPMT 2014
11

The enzyme recombinase is required at which stage of meiosis?

  1. Pachytene
  2. Zygotene
  3. Diplotene
  4. Diakinesis
AIPMT 2014

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