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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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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At metaphase, chromosomes are attached to the
spindle fibres by their :
1. Centromere
2. Satellites
3. Secondary constrictions
4. Kinetochores

Subtopic:  Cell Division: Mitosis (Karyokinesis) |
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Centromere is required for -

(1) Movement of chromosomes towards poles

(2) Cytoplasmic cleavage

(3) Crossing over

(4) Transcription

Subtopic:  Cell Division: Mitosis (Karyokinesis) |
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What occurs in crossing over :
1.  Recombination
2.  Mutation
3.  Independent assortment
4.  None

Subtopic:  Cell Cycle: Meiosis I |
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Crossing over that results in genetic recombination in higher organisms occurs between:-
1. Non-sister chromatids of a bivalent
2. Two daughter nuclei
3. Two different bivalents
4. Sister chromatids of a bivalents 

Subtopic:  Cell Cycle: Meiosis I |
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In the somatic cell cycle :-

1. DNA replication takes place in S-phase

2. A short interphase is followed by a long mitotic phase

3. G2 phase follows mitotic phase

4. In G1 phase, DNA content is double the amount of DNA present in the original cell 

Subtopic:  Intro to Cell Cycle & Interphase |
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