During cell cycle, events are under

1. Genetic control

2. Metabolic control

3. Cytoplasmic control

4. Mitochondrial control

Subtopic:  Intro to Cell Cycle & Interphase |
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Initiation of the assembly of mitotic spindle and the complete disintegration of the nuclear envelope can be observed in respectively

1.  Prophase and anaphase I.

2.  Metaphase and telophase.

3.  Prophase and metaphase.

4.  Metaphase and metaphase-I.

Subtopic:  Cell Division: Mitosis (Karyokinesis) |
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The stage during which separation of the paired homologous chromosomes begins is

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

Subtopic:  Cell Cycle: Meiosis I |
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In meiosis crossing over is initiated at
1. leptotene
2. zygotene
3. diplotene
4. pachytene

 

Subtopic:  Cell Cycle: Meiosis I |
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Match the following column I with column II. 

Column I  Column II
A. Synapsis aligns homologous chromosomes (i) Anaphase II
B. Synthesis of RNA and protein (ii) Zygotene
C. Action of enzyme recombinase (iii) G2 - phase
D. Centromeres do not separate, but chromatids move towards opposite poles (iv) Anaphase I
(v) Pachytene

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

2. A-(ii) B-(iii) C-(v) D-(iv)

3. A-(i) B-(ii) C-(v) D-(iv)

4. A-(ii) B-(iii) C-(iv) D-(v)

Subtopic:  Intro to Cell Cycle & Interphase | Cell Cycle: Meiosis I | Cell Cycle: Meiosis II |
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Consider the following four statements (I- IV) related to cell cycle, and select the correct option stating them as true (T) and false (F)

I. Cell growth in terms of cytoplasmic increase is a continuous process.
II. Interphase is the phase of actual cell division.
III. The number of chromosomes doubles in S-phase.
IV. The cell that does not divide further exits G1-phase to enter a metabolically inactive stage.

Options :
         I    II    III    IV

1.      T    F     F      F

2.      F    T     T     T

3.      F    F     T     T

4.      T    F     F     T

Subtopic:  Intro to Cell Cycle & Interphase |
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The microtubules from the opposite poles of the spindle attach to the pair of homologous chromosomes in

1. Metaphase - I 

2. Prophase - I

3. Metaphase 

4. Metaphase - II

Subtopic:  Cell Cycle: Meiosis I |
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Which of the following stages of Meiosis I of Prophase I is not correctly matched with events occurring during that stage?

 

Stage

Event

1.

Zygotene

Pairing between homologous chromosomes

2.

Pachytene

Crossing over between sister chromatids of homologous chromosomes

3.

Diplotene

 Tendency of recombined homologues to separate

4.

Diakinesis

 Terminalization of chiasmata

Subtopic:  Cell Cycle: Meiosis I |
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Cells in G0 phase:
1. terminate the cell cycle
2. exit the cell cycle
3. enter the cell cycle
4. suspend the cell cycle

Subtopic:  Intro to Cell Cycle & Interphase |
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The correct sequence of phases in cell cycle is:

1. G1SG2M

2. MG1G2S

3. G1G2SM

4. SG1G2M

Subtopic:  Intro to Cell Cycle & Interphase |
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