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Q. No.Males produce gametes by mitosis in:
1.
Honey bees
2.
Grasshopper
3.
Birds
4.
Drosophila melanogaster
Subtopic: Cell Division: Mitosis (Karyokinesis) | Cell Division: Mitosis (Cytokinesis) |
88%
From NCERT
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The paired homologues seen during zygotene of meiosis I are known as:
| 1. | Bivalent | 2. | Tetrad |
| 3. | Mitotic apparatus | 4. | Sister chromosomes |
Subtopic: Cell Cycle: Meiosis I |
81%
From NCERT
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Which of the following is not a feature of diakinesis stage of prophase I of meiosis I?
| 1. | Terminalization of chiasmata |
| 2. | Meiotic spindle assembling to prepare separation of homologues |
| 3. | Decondensation of the chromatin |
| 4. | NEBD and disappearance of nucleolus |
Subtopic: Cell Cycle: Meiosis I |
61%
From NCERT
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What would be true for comparison of Anaphase I and Anaphase II of meiosis?
| 1. | Centromere does not split in Anaphase I and homologues separate but centromere splits in Anaphase II and sister chromatids separate. |
| 2. | Centromere splits in Anaphase I and homologues separate but centromere does not split in Anaphase II and sister chromatids separate. |
| 3. | Paired homologues get attached to spindle from opposite poles in Anaphase I while sister chromatids of individual chromosomes get attached to spindle from opposite poles in Anaphase II. |
| 4. | Paired homologues get attached to spindle from opposite poles in Anaphase II while sister chromatids of individual chromosomes get attached to spindle from opposite poles in Anaphase I. |
Subtopic: Cell Cycle: Meiosis I | Cell Cycle: Meiosis II |
77%
From NCERT
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In meiosis:
| 1. | A single round of DNA replication is followed by two sequential divisions with the chromosome number and DNA content getting reduced twice |
| 2. | A single round of DNA replication is followed by two sequential divisions with the chromosome number getting reduced twice and DNA content getting reduced once |
| 3. | A single round of DNA replication is followed by two sequential divisions with the chromosome number getting reduced once and DNA content getting reduced twice |
| 4. | A single round of DNA replication is followed by two sequential divisions with the chromosome number and DNA content getting reduced once |
Subtopic: Cell Cycle: Meiosis I | Cell Cycle: Meiosis II |
51%
From NCERT
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Meiosis results in the formation of:
1. Two genetically identical diploid cells
2. Two genetically non identical diploid cells
3. Four genetically identical haploid cells
4. Four genetically non identical haploid cells
Subtopic: Cell Cycle: Meiosis I | Cell Cycle: Meiosis II |
66%
From NCERT
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Crossing over or recombination can be defined as:
| 1. | exchange of segments between sister chromatids of homologous chromosomes |
| 2. | exchange of segments between non sister chromatids of homologous chromosomes |
| 3. | exchange of segments between sister chromatids of heterologous chromosomes |
| 4. | exchange of segments between non sister chromatids of heterologous chromosomes |
Subtopic: Cell Cycle: Meiosis I |
91%
From NCERT
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The mechanisms that contribute to the genetic variation arising from sexual reproduction include:
| I: | Independent assortment of chromosomes |
| II: | Crossing over |
| III: | Random fertilization |
| 1. | I and II only | 2. | I and III only |
| 3. | II and III only | 4. | I, II and III |
Subtopic: Cell Cycle: Meiosis I | Cell Cycle: Meiosis II |
56%
From NCERT
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Identify the stage of meiotic cell division shown in the given diagram:
| 1. | Anaphase I | 2. | Anaphase II |
| 3. | Telophase I | 4. | Telophase II |
Subtopic: Cell Cycle: Meiosis I |
75%
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The beginning of diplotene is recognized by:
| I: | dissolution of the synaptonemal complex |
| II: | the tendency of recombined homologues of bivalents to separate |
| III: | tetrads becoming clearly visible |
| 1. | Only I and II | 2. | Only I and III |
| 3. | Only II and III | 4. | I, II, and III |
Subtopic: Cell Cycle: Meiosis I | Cell Cycle: Meiosis II |
69%
From NCERT
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