In S–phase, DNA is replicated in a medium containing radioactive thymidine. Radioactivity will be observed in:
1.  Euchromatin
2.  Heterochromatin
3.  Both
4.  Nucleolus

Subtopic:  Intro to Cell Cycle & Interphase |
AIPMT - 1998
Please attempt this question first.
Hints

What occurs in crossing over:
1.  Recombination
2.  Mutation
3.  Independent assortment
4.  None

Subtopic:  Cell Cycle: Meiosis I |
 94%
From NCERT
AIPMT - 1998
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

Amount of cellular DNA increases during:

1. Cytokinesis 2. Fertilisation
3. Mutation 4. Respiration
Subtopic:  Cell Cycle: Meiosis I |
 52%
From NCERT
AIPMT - 1999
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

Spindle fiber unites with which structure of chromosomes:
1. Chromocenter
2. Chromomere
3. Kinetochore
4. Centriole

Subtopic:  Cell Division: Mitosis (Karyokinesis) |
 93%
From NCERT
AIPMT - 2000
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

At which stage of the cell cycle does DNA replication occur:
1. G1 - phase
2. S - phase
3. G2 - phase
4. M - phase

Subtopic:  Intro to Cell Cycle & Interphase |
 96%
From NCERT
AIPMT - 2000
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 best material for the study of mitosis in the laboratory:

1. Anther

2. Root tip

3. Leaf tip

4. Ovary

Subtopic:  Intro to Cell Cycle & Interphase |
 84%
From NCERT
AIPMT - 2002
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

If a diploid cell is treated with colchicine then it becomes:

1. Triploid

2. Tetraploid

3. Diploid

4. Monoploid

Subtopic:  Cell Division: Mitosis (Karyokinesis) |
 70%
AIPMT - 2002
Please attempt this question first.
Hints

The cells of the quiescent centre are characterised by: 

1. Having dense cytoplasm and prominent nuclei

2. Having light cytoplasm and small nuclei

3. Dividing regularly to add to the corpus

4. Dividing regularly to add to tunica

Subtopic:  Intro to Cell Cycle & Interphase |
AIPMT - 2003
Please attempt this question first.
Hints

Which one of the following precedes the reformation of the nuclear envelope during the M phase of the cell cycle:
 

1. Decondensation from chromosomes and reassembly of the nuclear lamina
2. Formation of the contractile ring and formation of the phragmoplast
3. Formation of the contractile ring and transcription from chromosomes
4. Transcription from chromosomes and reassembly of the nuclear lamina
Subtopic:  Cell Division: Mitosis (Karyokinesis) |
 64%
AIPMT - 2004
Please attempt this question first.
Hints

Crossing over that results in genetic recombination in higher organisms occurs between:
1. Non-sister chromatids of a bivalent
2. Two daughter nuclei
3. Two different bivalents
4. Sister chromatids of a bivalent

Subtopic:  Cell Cycle: Meiosis I |
 88%
From NCERT
AIPMT - 2004
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