Dissolution of the synaptonemal complex occurs during : 

(1) Zygote 

(2) Diplotene 

(3) Leptotene 

(4) Pachytene 

Subtopic:  Cell Cycle: Meiosis I |
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Match the following with respect to meiosis:

a.  Zygotene         i.  Terminalization

b.  Pachytene       ii.  Chiasmata

c.  Diplotene        iii.  Crossing over

d.  Diakinesis      iv.  Synapsis

Select the correct option from the following:

       (a)      (b)     (c)     (d)

1.    iv       iii        ii        i

2.    i         ii         iv      iii      

3.    ii        iv        iii       i

4.   iii        iv        i        ii 

Subtopic:  Cell Cycle: Meiosis I |
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Identify the correct statement with regard to G1 phase (Gap 1) of interphase.

1.  The reorganisation of all cell components takes place.

2.  The cell is metabolically active, grow but does not replicate its DNA

3.  Nuclear Division takes place

4.  DNA synthesis or replication takes place. 

Subtopic:  Intro to Cell Cycle & Interphase |
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Some dividing cells exit the cell cycle and enter the vegetative inactive stage. This is called the quiescent stage G0. This process occurs at the end of:

1.  G1 phase

2.  S phase

3.  G2 phase

4.  M phase 

Subtopic:  Intro to Cell Cycle & Interphase |
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Attachment of spindle fibers to kinetochores of chromosomes becomes evident in :

1. Anaphase

2. Telophase

3. Prophase

4. Metaphase

Subtopic:  Cell Division: Mitosis (Karyokinesis) |
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In a mitotic cycle, the correct sequence of phases is

1. S, G1, G2, M

2. G1, S, G2, M

3. M, G1, G2, S

4. G1, G2, S, M

Subtopic:  Intro to Cell Cycle & Interphase |
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During Meiosis 1, in which stage synapsis takes place?

1. Pachytene

2. Zygotene

3. Diplotene

4. Leptotene

Subtopic:  Cell Cycle: Meiosis I |
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Match the following events that occur in their respective phases of cell cycle and select the correct option :

(a) G 1 phase                      (i) Cell grows and organelle duplication

(b) S phase                         (ii) DNA replication and chromosome duplication

(c) G 2 phase                       (iii) Cytoplasmic growth

(d) Metaphase in M-phase     (iv) Alignment of chromosomes

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

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

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

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

Subtopic:  Intro to Cell Cycle & Interphase |
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Crossing over takes place between which chromatids and in which stage of the cell cycle?

1. Non-sister chromatids of non-homologous chromosomes at Zygotene stage of prophase I.

2. Non-sister chromatids of homologous chromosomes at Pachytene stage of prophase I.

3. Non-sister chromatids of homologous chromosomes at Zygotene stage of prophase I.

4. Non-sister chromatids of non-homologous chromosomes at Pachytene stage of prophase I.

Subtopic:  Cell Cycle: Meiosis I |
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Identify the meiotic stage in which the homologous chromosomes separate while the sister chromatids remain associated at their centromeres :
1.  Metaphase-II
2.  Anaphase-I
3.  Anaphase-II
4.  Metaphase-I

Subtopic:  Cell Division: Mitosis (Karyokinesis) |
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