The Mitotic phase of a typical eukaryotic cell is divided into:

1. Two stages 2. Three stages
3. Four stages 4. Five stages

Subtopic:  Intro to Cell Cycle & Interphase |
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Match each item in Column I with one in Column II and select the correct answer from the codes given below:

Column I

 

Column II

A

Zygotene

a

Pairing of homologous chromosomes

B

Pachytene

b

Appearance of chiasma

C

Diplotene

c

Terminalization of chiasma

D

Diakinesis

d

Crossing over

Codes:

A B C D
1. a c b d
2. a d b c
3. a b c d
4. b c d a
Subtopic:  Cell Cycle: Meiosis I |
 93%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Identify the correct statement amongst the following:

1. Crossing over occurs in prophase I of meiosis and metaphase of mitosis.
2. DNA replication occurs once prior to mitosis and twice prior to meiosis.
3. Both mitosis and meiosis result in daughter cells identical to the parent cells.
4. Karyokinesis occurs once in mitosis and twice in meiosis.
Subtopic:  Cell Division: Mitosis (Karyokinesis) | Cell Cycle: Meiosis I |
 78%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

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
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

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 |
 60%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

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 |
 90%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

Which stage of meiosis is shown in the diagram given below?

1. Metaphase I 2. Metaphase II
3. Anaphase I 4. Anaphase II
Subtopic:  Cell Cycle: Meiosis II |
 70%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Organisms prefer sexual mode of reproduction in adverse conditions because:

1. It leads to a rapid proliferation of numbers
2. It requires two individuals that can support the progeny
3. It is less energy consuming than the asexual mode of reproduction
4. It provides protection and increases variations that may help progeny to survive
Subtopic:  Cell Cycle: Meiosis I |
 92%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Consider the following key events:

I: Chromosomes cluster at opposite spindle poles and their identity is lost as discrete elements.
II: Nucleolus, Golgi complex and ER reform.

The stage of mitosis characterized by these key events is:

1. Prophase 2. Metaphase
3. Anaphase 4. Telophase
Subtopic:  Cell Cycle: Meiosis I | Cell Cycle: Meiosis II |
 93%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

Identify the correct statement regarding meiosis amongst the following:

I: Meiosis involves two sequential cycles of nuclear and cell divisions but only a single cycle of DNA replication.
II: Meiosis II is initiated after the parental chromosomes have replicated to produce identical sister chromatids at the S phase.
III: Meiosis involves pairing of bivalents and recombinations between them.

 

1. I only 2. I and II only
3. I and III only 4. I, II and III
Subtopic:  Cell Cycle: Meiosis I |
 59%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch