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Q. No.The appearance of recombination nodules on homologous chromosomes during meiosis characterizes:
1. Terminalization
2. Synaptonemal complex
3. Bivalent
4. Sites at which crossing over occurs
Subtopic: Cell Cycle: Meiosis I |
76%
From NCERT
NEET - 2022
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Regarding Meiosis, which of the statement is incorrect ?
| 1. | Four haploid cells are formed at the end of Meiosis-II. |
| 2. | There are two stages in Meiosis, Meiosis-I and II. |
| 3. | DNA replication occurs in S phase of Meiosis-II. |
| 4. | Pairing of homologous chromosomes and recombination occurs in Meiosis-I. |
Subtopic: Cell Cycle: Meiosis I | Cell Cycle: Meiosis II |
86%
From NCERT
NEET - 2022
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Select the incorrect statement with reference to mitosis.
1. Splitting of centromere occurs at anaphase.
2. All the chromosomes lie at the equator at metaphase.
3. Spindle fibres attach to centromere of chromosomes.
4. Chromosomes decondense at telophase
1. Splitting of centromere occurs at anaphase.
2. All the chromosomes lie at the equator at metaphase.
3. Spindle fibres attach to centromere of chromosomes.
4. Chromosomes decondense at telophase
Subtopic: Cell Division: Mitosis (Karyokinesis) |
75%
From NCERT
NEET - 2022
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In prophase I of Meiosis, chromosomes start pairing together and synapsis takes place. This process occurs during which of the following stage?
| 1. | Pachytene | 2. | Diplotene |
| 3. | Leptotene | 4. | Zygotene |
Subtopic: Cell Cycle: Meiosis I |
83%
From NCERT
NEET - 2022
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Given below are two statements : One is labeled as Assertion (A) and the other is labeled as Reason (R)
| Assertion (A): | The growth of the multicellular organism is due to mitosis |
| Reason (R): | Mitosis is also called as equational division and it offers genetic stability |
In light of the above statements choose the correct answer from the options given below:
| 1. | (A) is True but (R) is False. |
| 2. | (A) is False but (R) is True. |
| 3. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 4. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
Subtopic: Cell Division: Mitosis (Karyokinesis) | Cell Division: Mitosis (Cytokinesis) |
From NCERT
NEET - 2022
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Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R).
| Assertion (A): | The beginning of diplotene is recognised by the dissolution of the synaptonemal complex and formation of X shaped structures called chiasmata |
| Reason (R): | In oocytes of some vertebrates, diplotene can last for months or years. |
In the light of the above statements, choose the correct answer from the options given below:
| 1. | (A) is correct but (R) is not correct. |
| 2. | (A) is not correct but (R) is correct. |
| 3. | Both (A) and (R) are correct and (R) is the correct explanation of (A). |
| 4. | Both (A) and (R) are correct but (R) is not the correct explanation of (A). |
Subtopic: Cell Cycle: Meiosis I |
75%
From NCERT
NEET - 2022
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The oocytes of some vertebrates get arrested for years or months in:
1. Telophase - I
2. Diplotene
3. Diakinesis
4. Metaphase - I
Subtopic: Cell Cycle: Meiosis I |
90%
From NCERT
NEET - 2022
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Select the correct sequence of events occurring during Prophase-I of Meiosis-I:
| (a) | Nuclear envelope breakdown |
| (b) | Synaptonemal complex formation |
| (c) | Compaction of chromosomes |
| (d) | Terminalisation of chiasmata |
| (e) | Crossing over |
Choose the most appropriate answer from the options given below:
1. (c) → (b) → (e) → (d) → (a)
2. (c) → (a) → (b) → (d) → (e)
3. (b) → (c) → (a) → (d) → (e)
4. (c) → (a) → (b) → (e) → (d)
Subtopic: Cell Cycle: Meiosis I |
61%
From NCERT
NEET - 2022
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If there are 20 centromeres in a cell at anaphase, how many chromosomes are there in each daughter cell following cytokinesis?
1. 10
2. 20
3. 30
4. 40
1. 10
2. 20
3. 30
4. 40
Subtopic: Intro to Cell Cycle & Interphase | Cell Division: Mitosis (Karyokinesis) |
52%
Please attempt this question first.
Hints
| A: | Mitosis does play a role in gamete formation. |
| R: | Haploid organisms divide by mitosis. |
| 1. | Both Assertion & Reason are true and the Reason is the correct explanation of the Assertion. |
| 2. | Both Assertion & Reason are true but the Reason is not the correct explanation of the Assertion |
| 3. | Assertion is a true statement but Reason is false. |
| 4. | Both Assertion and Reason are false statements. |
Subtopic: Cell Division: Mitosis (Karyokinesis) | Cell Division: Mitosis (Cytokinesis) |
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