In meiosis, the splitting of the centromere of each chromosome takes place during:
1. Metaphase I 2. Metaphase II
3. Anaphase I 4. Anaphase II

Subtopic:  Cell Cycle: Meiosis II |
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Level 2: 60%+
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Consider the given two statements:
Assertion (A): Meiosis is the mechanism by which conservation of specific chromosome number of each species is achieved across generations in sexually reproducing organisms.
Reason (R): Meiosis results in reduction of chromosome number by half in gametes.
 
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. (A) is False but (R) is True.
Subtopic:  Cell Cycle: Meiosis I |
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Level 2: 60%+
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Consider the given two statements:
Statement I: At Metaphase I the chromosomes align at the equator and the microtubules from opposite poles of the spindle get attached to the kinetochores of sister chromatids.
Statement II: At metaphase II the bivalent chromosomes align on the equatorial plate and microtubules from the opposite poles of the spindle attach to the kinetochore of homologous chromosomes.
 
1. Statement I is correct and Statement II is incorrect.
2. Statement I is incorrect and Statement II is incorrect.
3. Statement I is correct and Statement II is correct.
4. Statement I is incorrect and Statement II is correct.
Subtopic:  Cell Cycle: Meiosis I |
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Match the following column I with column II :
Column I Column II
A. Carcinogen 1. Cancerous tumour
B. Anaphase-I 2. Disjunction
C. Mitotsis 3. Synapsis
D. Zygotene 4. Plectonemic coiling
 
A B C D
1. 1 2 4 3
2. 3 1 4 2
3. 2 3 1 4
4. 4 1 3 2
Subtopic:  Cell Cycle: Meiosis I |
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Level 1: 80%+
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Post mitotic gap phase is characterised by all, except?
1. synthesis of RNA and nucleotides
2. no change in DNA content
3. synthesis of histone proteins
4. growth phase of the cell
Subtopic:  Cell Division: Mitosis (Karyokinesis) |
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Synaptonemal Complex is formed?
1. During Anaphase
2. During Metaphase
3. During Prophase II
4. During Prophase I of meiosis
Subtopic:  Cell Cycle: Meiosis I |
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Level 1: 80%+
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Above diagram represents:
1. Metaphase-I
2. Anaphase-I
3. Metaphase-II
4. Anaphase-II
Subtopic:  Cell Cycle: Meiosis I |
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Level 2: 60%+
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Synaptonemal complex is formed?
1. During anaphase
2. During metaphase
3. During prophase-II
4. During prophase-I of meiosis
Subtopic:  Cell Cycle: Meiosis I |
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Level 1: 80%+
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What will be the DNA content and number of chromosomes in a cell of after S phase as compared to the gamete of the same organism?
1. Same DNA content but double chromosome number
2. Four times DNA content but double chromosome number
3. Same DNA content but half chromosome number
4. Half DNA content but double chromosome number
Subtopic:  Cell Division: Mitosis (Karyokinesis) |
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Level 2: 60%+
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Spindle fibers attach to kinetochores of chromosomes during
1. Metaphase 2. Anaphase
3. Telophase 4. Prophase
Subtopic:  Cell Division: Mitosis (Karyokinesis) |
 78%
Level 2: 60%+
NEET - 2024
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NEET 2026 - Target Batch - Vital
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