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Q. No.Select the correct option based on statements below:
Assertion (A):
Meiosis leads to recombinations of genes.
Reason (R):
Crossing over occurs in pachytene sub-stage of prophase I of meiosis.
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.
Both (A) and (R) are false.
Subtopic: Cell Cycle: Meiosis I |
75%
From NCERT
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| A: | Tendency of parental combinations to remain together is called crossing over. |
| R: | Crossing over provides proof in favour of the linear arrangement of genes on chromosomes. |
| 1. | If both Assertion & Reason are true and the reason is the correct explanation of the assertion.. |
| 2. | If both Assertion & Reason are true but the reason is not the correct explanation of the assertion. |
| 3. | If Assertion is a true statement but Reason is false.. |
| 4. | If both Assertion and Reason are false statements. |
Subtopic: Cell Cycle: Meiosis I |
53%
From NCERT
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During which phase of mitosis do the chromatids become chromosomes?
| 1. | telophase | 2. | anaphase |
| 3. | prophase | 4. | metaphase |
Subtopic: Cell Division: Mitosis (Karyokinesis) |
From NCERT
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During growth the contents of a nucleus in human body undergo profound changes. How many chromatids does it contain?
1. 96
2. 23
3. 46
4. 92
1. 96
2. 23
3. 46
4. 92
Subtopic: Intro to Cell Cycle & Interphase |
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Hints
In the adult animal, most of the cells appear to exhibit division except
1. Liver cells
2. Spleen cells
3. Blood cells
4. Heart cells
1. Liver cells
2. Spleen cells
3. Blood cells
4. Heart cells
Subtopic: Intro to Cell Cycle & Interphase |
84%
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Hints
Select correct combination of metaphase characteristics.
A. Condensation of chromosomes is complete
B. Chromosomes are moved to spindle equator
C. Daughter chromosomes begin their migration towards the opposite poles
D. Spindle fibers attach to kinetochores
E. Chromosome moves away from the equatorial plate
Choose the correct answer from the options given below:
1. A, B, D only
2. B, C, D only
3. E only
4. B, C, D, E only
A. Condensation of chromosomes is complete
B. Chromosomes are moved to spindle equator
C. Daughter chromosomes begin their migration towards the opposite poles
D. Spindle fibers attach to kinetochores
E. Chromosome moves away from the equatorial plate
Choose the correct answer from the options given below:
1. A, B, D only
2. B, C, D only
3. E only
4. B, C, D, E only
Subtopic: Cell Division: Mitosis (Karyokinesis) |
84%
From NCERT
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Arrange the following stages of chromosomal behaviour during Prophase-I of meiosis in the correct sequence.
A. Appearance of recombination nodules
B. Formation of synaptonemal complex
C. Appearance of chiasmata
D. Terminalisation of chiasmata
E. Beginning of chromosomal compaction
Choose the correct answer from the options given below:
1. E, B, D, A, C
2. C, D, A, E, B
3. E, B, A, C, D
4. D, B, E, A, C
A. Appearance of recombination nodules
B. Formation of synaptonemal complex
C. Appearance of chiasmata
D. Terminalisation of chiasmata
E. Beginning of chromosomal compaction
Choose the correct answer from the options given below:
1. E, B, D, A, C
2. C, D, A, E, B
3. E, B, A, C, D
4. D, B, E, A, C
Subtopic: Cell Cycle: Meiosis I |
88%
From NCERT
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Arrange in correct sequence with respect of Meiosis-I
A. Crossing over
B. Chiasmata formation
C. Compaction of chromosome
D. Disappearance of nucleolus and breakdown of nuclear envelop
E. Formation of synaptonemal complex
Choose the correct from the options given below
1. A>B>C>D>E
2. C>E>A>B>D
3. D>B>C>E>A
4. A>D>C>B>E
A. Crossing over
B. Chiasmata formation
C. Compaction of chromosome
D. Disappearance of nucleolus and breakdown of nuclear envelop
E. Formation of synaptonemal complex
Choose the correct from the options given below
1. A>B>C>D>E
2. C>E>A>B>D
3. D>B>C>E>A
4. A>D>C>B>E
Subtopic: Cell Cycle: Meiosis I |
89%
From NCERT
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Given below are two statements:
In light of the above statements, choose the most appropriate answer from the options given below:
| Statement I: | In mitosis, chromosomal number in the progeny as well as in parents remains the same |
| Statement II: | Mitosis takes place in gametes |
| 1. | Both statement I and statement II are correct |
| 2. | Both statement I and statement II are incorrect |
| 3. | Statement I is correct but statement II is incorrect |
| 4. | Statement I is incorrect but statement II is correct |
Subtopic: Intro to Cell Cycle & Interphase | Cell Division: Mitosis (Karyokinesis) | Cell Cycle: Meiosis I |
From NCERT
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Arrange the steps of cell division in the correct order
A. Cytokinesis
B. Metaphase
C. Anaphase
D. Telophase
E. Prophase
Choose the correct answer from the options given below
1. E, B, C, A, D
2. A, B, C, D, E
3. E, B, C, D, A
4. A, B, C, E, D
A. Cytokinesis
B. Metaphase
C. Anaphase
D. Telophase
E. Prophase
Choose the correct answer from the options given below
1. E, B, C, A, D
2. A, B, C, D, E
3. E, B, C, D, A
4. A, B, C, E, D
Subtopic: Intro to Cell Cycle & Interphase |
90%
From NCERT
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