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Q. No.Meiosis in sexually reproducing organisms creates new variations by shuffling the available genetic material and leads to the formation of a recombinant DNA which is created at:
1.
Pachytene of Prophase I
2.
Diplotene of Prophase I
3.
Anaphase I of Meiosis I
4.
Anaphase II of Meiosis II
Subtopic: Cell Cycle: Meiosis I |
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What stage of prophase I of meiosis I:
1. Zygotene
2. Pachytene
3. Diplotene
4. Diakinesis
| a. | is characterized by the visibility of chiasmata |
| b. | can last for months and years in some vertebrate oocytes |
2. Pachytene
3. Diplotene
4. Diakinesis
Subtopic: Cell Cycle: Meiosis I |
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During which stage of the meiotic cell division does the centromere split leading to the separation of sister chromatids?
| 1. | Metaphase I | 2. | Metaphase II |
| 3. | Anaphase I | 4. | Anaphase II |
Subtopic: Cell Cycle: Meiosis II |
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You want to study the morphology of chromosomes in a cell and you have selected a cell undergoing mitosis. Which stage will be the best for this purpose?
| 1. | Late prophase | 2. | Metaphase |
| 3. | Anaphase | 4. | Telophase |
Subtopic: Cell Division: Mitosis (Karyokinesis) | Cell Division: Mitosis (Cytokinesis) |
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A cell decides not to divide and enters the Quiescent Stage (G0) exiting the cell cycle from:
1. G1 phase
2. S phase
3. G2 phase
4. M phase
1. G1 phase
2. S phase
3. G2 phase
4. M phase
Subtopic: Intro to Cell Cycle & Interphase |
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Which of the following is not a significance of mitosis?
| 1. | Restoration of nuclear/cytoplasmic ratio |
| 2. | Growth |
| 3. | Reduction of chromosome number |
| 4. | Replacement of lost cells |
Subtopic: Cell Division: Mitosis (Karyokinesis) | Cell Division: Mitosis (Cytokinesis) |
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Which one of the following never occurs during mitotic cell division?
| 1. | Coiling and condensation of chromatids |
| 2. | Spindle fibres attach to Kinetochores of chromosomes |
| 3. | Movement of centrioles towards opposite poles |
| 4. | Pairing of homologous chromosomes |
Subtopic: Cell Division: Mitosis (Karyokinesis) |
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Level 1: 80%+
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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
1. Terminalization
2. Synaptonemal complex
3. Bivalent
4. Sites at which crossing over occurs
Subtopic: Cell Cycle: Meiosis I |
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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%
Level 1: 80%+
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 |
Subtopic: Cell Division: Mitosis (Karyokinesis) |
75%
Level 2: 60%+
NEET - 2022
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