In meiosis crossing over is initiated at

1. Pachytene 2. Leptotene
3. Zygotene 4. Diplotene

Subtopic:  Cell Cycle: Meiosis I |
 82%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


Which of the following is not a characteristic feature during mitosis in somatic cells?

1. Spindle fibres 2. Disappearance of nucleolus
3. Chromosome movement 4. Synapsis
Subtopic:  Cell Cycle: Meiosis I | Cell Cycle: Meiosis II |
 84%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


Identify the stage of mitosis shown in the given diagram:

1. Prophase 2. Metaphase
3. Anaphase 4. Telophase
Subtopic:  Cell Division: Mitosis (Karyokinesis) |
 80%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


Identify the correct statements regarding G1 phase of the cell cycle:

I: It is the post-mitotic gap phase
II: The cell is metabolically active and grows continuously
III: Cell replicates its DNA

1. Only II 2. I and II only
3. Only I 4. I, II and III
Subtopic:  Intro to Cell Cycle & Interphase |
 70%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


What would be the DNA content and chromosome number in a cell at the end of S phase with 2C DNA content and 2N chromosome number in G1?

1. 4C and 4N 2. 2C and 4N
3. 4C and 2N 4. 2C and 2N
Subtopic:  Intro to Cell Cycle & Interphase |
 86%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


Proteins are synthesized in preparation for mitosis during:

1. G1 phase 2. S phase
3. G2 phase 4. M phase
Subtopic:  Intro to Cell Cycle & Interphase |
 65%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


The cells in the quiescent stage [G0] phase of the cell cycle:

1. exit from the S phase

2. continue the events of cell cycle and complete the division

3. are metabolically active

4. cannot ever proliferate

Subtopic:  Intro to Cell Cycle & Interphase |
 76%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


Mitosis is also called ‘equational division’ because:

1. the number of chromosomes in both daughter cells are the same
2. the sum of the number of chromosomes in two daughter cells is equal to the number of chromosomes in the parent cell
3. each progeny cell receives only one set of chromosomes from the parent cell
4. the number of chromosomes in the parent and the progeny cells is the same
Subtopic:  Cell Division: Mitosis (Karyokinesis) | Cell Division: Mitosis (Cytokinesis) |
 66%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


The phase of the cell cycle during which DNA replication takes place is:

1. G1 phase 2. S phase
3. G2 phase 4. M phase
Subtopic:  Intro to Cell Cycle & Interphase |
 95%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


The correct chronology of stages of karyokinesis in mitosis is:

1. Prophase – Anaphase – Metaphase – Telophase

2. Prophase – Metaphase – Anaphase – Telophase

3. Prophase – Metaphase – Telophase – Anaphase

4. Telophase – Anaphase – Metaphase – Prophase

Subtopic:  Cell Division: Mitosis (Karyokinesis) |
 94%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.