In G1 phase, a cell has 2N chromosome content and 2C DNA content. The chromosome and DNA content at the end of S phase in this cell would be:

1. 1N; 1C 2. 2N; 2C
3. 2N; 4C 4. 4N; 4C

Subtopic:  Intro to Cell Cycle & Interphase |
 93%
Level 1: 80%+
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Large protein complexes on the synaptonemal complex between two synapsed homologous chromosomes are called as:

1. Kinetochore 2. Chiasmata
3. Recombination nodules 4. Telomeres
Subtopic:  Cell Cycle: Meiosis I |
 68%
Level 2: 60%+
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The components of nuclear envelope are dismantled during:

1. prophase and reconstructed during telophase
2. prophase and reconstructed during anaphase
3. metaphase and reconstructed during telophase
4. metaphase and reconstructed during anaphase
Subtopic:  Cell Division: Mitosis (Karyokinesis) |
 85%
Level 1: 80%+
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The cell shown in the diagram is most likely at:

1. Metaphase I 2. Metaphase II
3. Anaphase I 4. Anaphase II
Subtopic:  Cell Cycle: Meiosis II |
 61%
Level 2: 60%+
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Consider the following two statements:

I: Plant cells undergo cytokinesis in a different manner than the animal cells.
II: Plant cells are enclosed by a relatively inextensible cell wall.

Of the two statements:

1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. I is incorrect but II is correct
Subtopic:  Cell Division: Mitosis (Cytokinesis) |
 73%
Level 2: 60%+
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During diakinesis of prophase I:
I. Terminalisation of chiasmata takes place.
II. Meiotic spindle is assembled.
III. Nucleolus disappears and the nuclear membrane breaks down.
The correct statements are:

1. I, II and III 2. I and II only
3. I and III only 4. II and III only
Subtopic:  Cell Cycle: Meiosis I | Cell Cycle: Meiosis II |
 66%
Level 2: 60%+
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During meiosis, the bivalent chromosomes clearly appear as tetrads first at:

1. Zygotene of Prophase I 2. Pachytene of Prophase I
3. Metaphase I 4. Anaphase I
Subtopic:  Cell Cycle: Meiosis I | Cell Cycle: Meiosis II |
 69%
Level 2: 60%+
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With respect to meiosis, when does DNA replication occur?

1. Before meiosis I only 2. After meiosis I only
3. Before and after meiosis I 4. After meiosis II
Subtopic:  Cell Cycle: Meiosis I |
 79%
Level 2: 60%+
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The point of contact between paired chromatids during meiosis, resulting in a cross-shaped configuration and representing the cytological manifestation of crossing over is called:

1. Centromere 2. Centrosome
3. Chiasmata 4. Tetrad
Subtopic:  Cell Cycle: Meiosis I |
 86%
Level 1: 80%+
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A ribbon-like structure consisting of three protein components and extending across the region of synapsed chromosomes during the prophase of meiosis, is called:

1. Phragmoplast 2. Phragmosome
3. Synaptonemal complex 4. Recombination nodule
Subtopic:  Cell Cycle: Meiosis I |
 72%
Level 2: 60%+
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