Doubling of the number of chromosomes can be achieved by disrupting mitotic cell division soon after:
1. Anaphase 2. Telophase
3. Prophase 4. Metaphase

Subtopic:  Cell Division: Mitosis (Karyokinesis) |
NEET - 2023
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During which stages of mitosis and meiosis, respectively, does the centromere of each chromosome split?
1. Metaphase, Metaphase II 2. Prophase, Telophase I
3. Telophase, Anaphase I 4. Anaphase, Anaphase II
Subtopic:  Cell Division: Mitosis (Karyokinesis) | Cell Cycle: Meiosis II |
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From NCERT
NEET - 2023
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Which one of the following is the quiescent stage of cell cycle?
1.M2.G2
3.G14.G0
Subtopic:  Intro to Cell Cycle & Interphase |
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From NCERT
NEET - 2023
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Select the correct sequence of substages of Prophase - I of Meiotic division
(A) Zygotene
(B) Pachytene
(C) Diakinesis
(D) Leptotene
(E) Diplotene
Choose the correct answer from the options given below:
1. (D), (B), (A), (E), (C) 2. (A), (B), (D), (E), (C)
3. (D), (A), (B), (E), (C) 4. (A), (D), (B), (C), (E)
Subtopic:  Cell Cycle: Meiosis I |
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From NCERT
NEET - 2023
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Given below are two statements: 
Assertion (A): M phase is also known as equational division.
Reason (R): In mitosis, number of chromosomes in the parent and the progency cells is the same.
 
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:  Intro to Cell Cycle & Interphase | Cell Division: Mitosis (Karyokinesis) |
 87%
From NCERT
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Given below are two statements: 
Assertion (A): The chromosomes are spread through the cytoplasm of the cell in the metaphase.
Reason (R): Complete disintegration of the nuclear envelope takes place in the metaphase.
 
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 Division: Mitosis (Karyokinesis) |
 54%
From NCERT
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Given below are two statements: 
Assertion (A): It is essential for a cell to divide, to restore the nucleo-cytoplasmic ratio.
Reason (R): Cell growth disturbs the nucleo-cytoplasmic ratio.
 
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 Division: Mitosis (Karyokinesis) |
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From NCERT
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Given below are two statements: 
Assertion (A): Meiosis does not occur in haploids cells.
Reason (R): Haploid cells do not form 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. Both (A) and (R) are false.
Subtopic:  Intro to Cell Cycle & Interphase | Cell Cycle: Meiosis I |
From NCERT
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Given below are two statements: 
Assertion (A): During anaphase-1 of meiosis, non-homologous chromosomes separate.
Reason (R): There is splitting of centromere during anaphase-1.
 
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 | Cell Cycle: Meiosis II |
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From NCERT
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Given below are two statements: 
Assertion (A): In anaphase stage chromatids move to opposite poles.
Reason (R): Anaphase is the shortest phase.
 
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 Division: Mitosis (Karyokinesis) | Cell Cycle: Meiosis I |
 72%
From NCERT
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