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In G(2)-phase, DNA content is...

In `G_(2)`-phase, DNA content is

A

2n

B

n

C

3n

D

4n

Text Solution

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The correct Answer is:
D
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Assertion: DNA synthesis occurs in G_(1) and G_(2) periods of cell cycle. Reason: During G_(1) and G_(2) phase the DNA contents become double.

G_(0) phase is

What is not true about cell cycle ? a. During G_(1) phase there is active synthesis of RNA and proteins but no change in its DNA content b. In synthesis or S phases, each chromosome carriers a duplicate set of genes c. During G_(2) phase, a cell contains double the amount ($C) of DNA present in the original diploid cell (2C) d. In S-phase a cell doubles the original diploid (2n) chromosome number

In quiescent zone, DNA content is -

Which of the following correctly related with given diagram ? (i) sequence of cell cycle = G_1 - S - G_2 - M phase (ii) A cell exist G_1 phase to enter an inactive stage - Quiescent stage or G_0 (iii) G_1 phase is the interval between mitosis and Initiation of DNA replication . (iv) In G_1 phase DNA synthesis occurs.

Base ratio of a DNA is 0.03 and the amount of A-TN_(2) base contents is 30000, then what is the amount of G-C,N_(2) bae contents in this DNA?

Which one among the following is correct ? (A) Duration of interphase is short as compared to M- phase (B) DNA content becomes double during M-phase (C) DNA replication occurs in S- phase (D) Mitotic phase occurs in bacteriophage

Assertion: In plant cells, during S-phase, DNA replication begins in the nucleus, and the centriole duplicates in the cytoplasm. Reason: If the initial amount of DNA is denoted as 2n in G_(1) even after S-phase the amount of DNA remains the same i.e., 2n.

DINESH PUBLICATION-CELL CYCLE (CELL DIVISION)-REVISION QUESTIONS
  1. Fibroblast cells in our body are those that are arrested in

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  2. Cyclin is required for cell cycle. Which other molecule is essential f...

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  3. In G(2)-phase, DNA content is

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  4. Which type of coiling occurs in chromosomes ?

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  5. Chromosomes are least condensed during

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  6. At what stage does the number of chromosomes become half ?

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  7. Arrange the following events of meiosis in correct sequence ? 1.Term...

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  8. Pick up the correct statement : (a) Synapsis of homologous chromosom...

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  9. If a cell possesses twice as much DNA as in the functional cell, the c...

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  10. A diploid living organism develops from zygote by repeated

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  11. Centromere is rquired for

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  12. When synapsis is complete all along the chromosomes, the cell is said...

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  13. During meiosis

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  14. In animal cells, cytokinesis involves

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  15. A plant cell has 12 chromosomes at the end of mitosis. How many chromo...

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  16. Astral tays arise from

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  17. Meiotic cell division is also termed as reduction division because of

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  18. The major event that occurs during the anaphase of mitosis. Which brin...

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  19. In which stage of meiosis the structure, number and shape of chromosom...

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  20. In which stage synaptinemal complex dissolves, chromaties become clear...

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