Which stage of meiosis can last for months or years in the oocytes of some vertebrates?
1. Leptotene
2. Pachytene
3. Diplotene
4. Diakinesis

Subtopic:  Cell Cycle: Meiosis I |
 89%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

In meiosis, crossing over and exchange of genetic material between homologous chromosomes are catalyzed by the enzyme.
1. Phosphorylase
2. Recombinase
3. Transferase
4. Polymerase
Subtopic:  Cell Cycle: Meiosis I |
 93%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Identify the correct sequence of events during Prophase I of meiosis:
 
a. Synapsis of homologous chromosomes
b. Chromosomes become gradually visible under a microscope
c. Crossing over between non-sister chromatids of homologous chromosomes
d. Terminalisation of chiasmata
e. Dissolution of synaptonemal complex

Choose the correct answer from the options given below :
1. (a), (b), (c), (d), (e)
2. (b), (c), (d), (e), (a)
3. (b), (a), (c), (e), (d)
4. (a), (c), (d), (e), (b)
Subtopic:  Cell Cycle: Meiosis I |
 79%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Bivalent or Tetrad formation is a characteristic feature observed during :
1. Synaptonemal complex in the zygotene stage
2. Chiasmata in the diplotene stage
3. Synaptonemal complex in the pachytene stage
4. Chiasmata in the zygotene stage
Subtopic:  Cell Cycle: Meiosis I |
 67%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

With respect to metaphase, which of the following statements is incorrect ?
1. Complete disintegration of nuclear envelope takes place.
2. Chromosomes are highly condensed.
3. Metaphase chromosomes are made up of four sister chromatids held together by centromere.
4. Chromosomes lie at the equator of the cell.
Subtopic:  Cell Division: Mitosis (Karyokinesis) |
 65%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The event shown in the given diagram takes place during:
1. Pachytene of Prophase I 2. Diplotene of Prophase I
3. Metaphase II 4. Anaphase II
Subtopic:  Cell Cycle: Meiosis I |
 85%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

A and B in the given diagram are events seen in Meiosis I and C and D are events seen in Meiosis II.  Identify the correct match:
A Prophase I and arrow shows chiasmata
B Anaphase I and arrow shows sister chromatids associated at centromere
C Prophase II and arrows show attachment of spindle microtubules to kinetochore
D Anaphase II and the diagram shows separated sister chromatids after the split of centromere
1. Only A, B and C 2. Only A, C and D
3. Only B, C and D 4. A, B, C and D
Subtopic:  Cell Cycle: Meiosis I |
 61%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

The diagram shows cytokinesis in animal cell [I] and in plant cell [II]. What will be correct for A, B and C in these cells?
Animal cell Plant cell
A Furrow formed using actin and myosin Vesicles from Golgi move to centre
B The furrow reaches centre from periphery Tubular structures merge to form plasma membrane
C Cells pinched apart Pectins deposited leading to formation of middle lamella
1. Only A and B 2. Only A and C
3. Only B and C 4. A, B and C
Subtopic:  Cell Division: Mitosis (Karyokinesis) | Cell Division: Mitosis (Cytokinesis) |
 54%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

The given diagram shows a slide with cells labeled as A, B, C and D at different stages of cell division. Identify the correct match:  
A B C D
1. Interphase Telophase Prophase Anaphase
2. Interkinesis Anaphase Prophase Metaphase
3. Interkinesis Telophase Metaphase Anaphase
4. Interphase Prophase Metaphase Anaphase
Subtopic:  Cell Division: Mitosis (Karyokinesis) |
 65%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

In a eukaryote, the cell cycle typically is divided into:
1. Two phases
2. Three phases
3. Four phases
4. Five phases
 
Subtopic:  Intro to Cell Cycle & Interphase | Cell Division: Mitosis (Karyokinesis) | Cell Division: Mitosis (Cytokinesis) |
 70%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.