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Q. No.

Bivalent chromosomes clearly appear as tetrads during:

1. Zygotene

2. Pachytene

3. Diplotene

4. Diakinesis

Subtopic:  Cell Cycle: Meiosis I |
 75%
Level 2: 60%+
Hints

The beginning of diplotene is recognized by :

1. appearance of recombination nodules
2. Crossing over
3. Dissolution of synaptonemal complex
4. Appearance of chiasmata
Subtopic:  Cell Cycle: Meiosis I |
 78%
Level 2: 60%+
Hints

Consider the given two statements:

I. During G1 phase the cell is metabolically active and continuously grows but does not replicate its DNA.
II. During G2 phase, proteins are synthesized in preparation for mitosis while cell growth continues.

Of the two statements:

1. Only l is correct
2. Only ll is correct
3. Both l and ll are correct
4. Both l and ll are incorrect 
Subtopic:  Intro to Cell Cycle & Interphase |
 93%
Level 1: 80%+
Hints
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If the DNA content of an onion tip cell is 2C at the end of M phase, what would be its DNA content at the end of S phase?

1. C 2. 2C
3. 3C 4. 4C
Subtopic:  Intro to Cell Cycle & Interphase |
 85%
Level 1: 80%+
Hints

In oocyte of some vertebrates, the stage of meiosis I that can last for months or years would be:

1. Zygotene 2. Pachytene
3. Diplotene 4. Diakinesis
Subtopic:  Cell Cycle: Meiosis I |
 83%
Level 1: 80%+
Hints

At what phase of meiosis are homologous chromosomes separated ?

1. Prophase l
2. Prophase ll
3. Anaphase l
4. Anaphase ll

Subtopic:  Cell Cycle: Meiosis I |
 76%
Level 2: 60%+
Hints
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During meiosis, the sister chromatids separate during:

1. Anaphase II    
2. Anaphase I     
3. The S phase    
4. Synapsis
Subtopic:  Cell Cycle: Meiosis II |
 80%
Level 1: 80%+
Hints

During meiosis I in human, one of the daughter cells receives:

(1) Only maternal chromosomes

(2) A mixture of maternal and paternal chromosomes

(3) The same number of chromosomes as a diploid cell

(4) A sister chromatid from each chromosome

Subtopic:  Cell Cycle: Meiosis I |
 65%
Level 2: 60%+
Hints

Chromosomes decondense into diffuse chromatin:

1. At the end of telophase                
2. At the beginning of prophase
3. At the end of interphase              
4. At the end of metaphase
Subtopic:  Cell Division: Mitosis (Karyokinesis) |
 80%
Level 1: 80%+
Hints
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The total DNA content of each daughter cell is reduced during meiosis because:

1. Chromosomes do not replicate during the interphase preceding meiosis I
2. Chromosomes do not replicate between meiosis I and II
3. Half of the chromosomes from each gamete are lost during fertilization
4. Chromosome arms are lost during crossing over
Subtopic:  Cell Cycle: Meiosis I | Cell Cycle: Meiosis II |
 61%
Level 2: 60%+
Hints
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