A reduction step during meiosis is important because:

(1) It returns the chromosome number to normal before fertilization

(2) There is a mechanism for this

(3) Only one copy of each chromosome is necessary

(4) Otherwise chromosome copies would double each fertilization

Subtopic:  Cell Cycle: Meiosis I | Cell Cycle: Meiosis II |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


Which of the following statements about meiosis is false?
(1) Haploid cells cannot divide meiotically

(2) DNA replication does not occur during interkinesis

(3) Assortment of homologous chromosomes on the equatorial plate during metaphase I is independent

(4) Of the four cells produced by meiosis, none are genetically identical to the parent cells but two are identical to each other

Subtopic:  Cell Cycle: Meiosis I |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


D, E, F and G are the four daughter cells resulting when cell A undergoes meiosis as shown in the following diagram. If no crossing over has occurred which cells listed below, if any, are genetically identical?

(1) Cells B and C                               

(2) No two cells

(3) Cells D and E, cells F and G         

(4) Cells D, and F, Cell E and G

Subtopic:  Cell Cycle: Meiosis I |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


The DNA content of individual cells and the number of cells in each phase of a "cell cycle" can be determined, using flow cytometry. Which of the following combinations of "phase of a cell cycle and its corresponding DNA content" can be considered normal?
A. Diploid cells found in the Go or G1 phase.
B. Cells with twice the normal DNA content in the early M phase.
C. Cells with intermediate amounts of DNA in the S Phase.
D. Cells with twice the normal DNA content in the G2 phase.
(1) A and B               

(2) B and C             

(3) C and D             

(4) All are correct

Subtopic:  Intro to Cell Cycle & Interphase |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


Let a cell's generation time is 1 minute. In 20 minutes a culture tube (culture medium) is 1/8th filled with cells. When the tube will be fullfilled?

(1) 21 minutes     

(2) 23 minutes     

(3) 60 minutes     

(4) 160 minutes

Subtopic:  Intro to Cell Cycle & Interphase |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


The following diagram refers to a typical cell cycle.

Identify the parts marked as X, Y and Z.

1. X - G1; Y - S; Z - G2                      2. X - G2; Y - S; Z - G1

3. X - G0; Y - S; Z - G2                     4. X - G1; Y - G2; Z - G0

Subtopic:  Intro to Cell Cycle & Interphase |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


Identify the meiotic stage in which the homologous chromosomes separate while the sister chromatids remain associated at their centromeres:

(1) Metaphase I    

(2) Metaphase II  

(3) Anaphase I     

(4) Anaphase II

Subtopic:  Cell Cycle: Meiosis I |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


At which stage of meiosis does the genetic constitution of gametes is finally decided:

(1) Metaphase I    

(2) Anaphase II    

(3) Metaphase II   

(4) Anaphase I

Subtopic:  Cell Cycle: Meiosis I |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


Select the correct statement about G1 phase:

(1) Cell is metabolically inactive

(2) DNA in the cell does not replicate

(3) It is not a phase of synthesis of macromolecules

(4) Cell stops growing

Subtopic:  Intro to Cell Cycle & Interphase |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


A. Most dramatic period of cell cycle
involving a major reorganization of virtually all components of the cell
B. It represents the phase when the actual cell division occurs
These statements (A & B) are concerned with
1.S-phase                                2. G1 phase
3. M-phase                              4. G2 phase

Subtopic:  Cell Division: Mitosis (Karyokinesis) | Cell Division: Mitosis (Cytokinesis) |
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level: