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Cell Cycle and Cell Division · Question 34

NEET (UG) 2020MatchingEasy📈 Topic in 75% papers+4−1
1

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)

Answer

(1) (A)-(iv), (B)-(iii), (C)-(ii), (D)-(i)

Solution

As per NCERT, the substages of prophase I are marked by the following events:

(A) Zygotene ⇒ homologous chromosomes pair up; this pairing is called synapsis ⇒ (iv)

(B) Pachytene ⇒ exchange of genetic material between non-sister chromatids, i.e. crossing over ⇒ (iii)

(C) Diplotene ⇒ synaptonemal complex dissolves and the homologues remain attached at the X-shaped chiasmata ⇒ (ii)

(D) Diakinesis ⇒ terminalisation of chiasmata ⇒ (i)

∴ (A)-(iv), (B)-(iii), (C)-(ii), (D)-(i)

Answer: (1)

NEET (UG) 2020

Keep practising — Cell Cycle and Cell Division

2

Dissolution of the synaptonemal complex occurs during

  1. Diplotene
  2. Zygotene
  3. Pachytene
  4. Leptotene
NEET (UG) 2020
3

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.
NEET (UG) 2020
4

Cells in G0 phase:

  1. suspend the cell cycle
  2. terminate the cell cycle
  3. exit the cell cycle
  4. enter the cell cycle
NEET (UG) 2019
5

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
NEET (UG) 2019
6

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

  1. zygotene
  2. pachytene
  3. diplotene
  4. diakinesis
NEET 2018
7

Which of the following options gives the correct sequence of events during mitosis?

  1. Condensation Nuclear membrane disassembly Arrangement at equator Centromere division Segregation Telophase
  2. Condensation Crossing over Nuclear membrane disassembly Segregation Telophase
  3. Condensation Arrangement at equator Centromere division Segregation Telophase
  4. Condensation Nuclear membrane disassembly Crossing over Segregation Telophase
NEET 2017
8

Anaphase Promoting Complex (APC) is a protein degradation machinery necessary for proper mitosis of animal cell. If APC is defective in a human cell, which of the following is expected to occur?

  1. Chromosomes will be fragmented.
  2. Chromosomes will not segregate.
  3. Recombination of chromosome arms will occur.
  4. Chromosomes will not condense.
NEET 2017
9

Spindle fibres attach on to

  1. centromere of the chromosome
  2. kinetosome of the chromosome
  3. telomere of the chromosome
  4. kinetochore of the chromosome.
NEET 2016 (Phase 1)
10

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
NEET 2016 (Phase 1)
11

In meiosis crossing over is initiated at

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

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