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In ‘S phase’, the amount of DNA...

In ‘S phase’, the amount of DNA

A

As well as number of chromososmes doubles in each cell

B

Doubles but number of chromosomes remains same in each cell

C

And number of chromosomes remain unchanged in each cell, but amount of protein doubles

D

Remains same in each cell but number of chromosomes doubles

Text Solution

Verified by Experts

The correct Answer is:
B
In 'S' phase of the cell cycle amount of DNA doubles but number of chromosomes remains same in each cell.
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During which phase (s ) of the cell, cycle, the amount of DNA in a cell remains at 4C level of the initial amount is denoted as 2C ,?

Assertion :- During S-phase, amount of DNA per cell boubles. Reason :- During S-phase, there is no increase in cromosome number.

Knowledge Check

  • If the initial amount of DNA is 8, C then after S phase the amount of DNA would be

    A
    4 C
    B
    8 C
    C
    64 C
    D
    16 C

  • At the end of the G2 phase, the amount of DNA in a diploid cell having the amount of chromosome 2C will be

    A
    C.
    B
    2C.
    C
    4C.
    D
    `C//2.`

  • During the synthesis phase, if the initial amount of DNA in the cell is 15 ng, then after the synthesis phase the amount of DNA in the cell will be ……..

    A
    15 ng
    B
    30 ng
    C
    45 ng
    D
    60 ng

    • Similar Questions

    Explore conceptually related problems

    If the initial amount of DNA is denoted as 2C then the amount of DNA after S-phase will be:

    If the initial amount of DNA is denoted by 2 C then the amount of DNA present after S phase will be

    In which phase of the cell cycle, the amount of DNA in a cell remains constant at 4C level, considering that the initial amount of DNA was 2C ?

    Which one is correct about S-phase (synthetic phase)? I. It occurs between G_(1) and G_(2) II. ltmarks the period during which DNA replicates III. At the end of this phase DNA is doubled but the number of chromosomes remains unchanged IV. As the DNA Is doubled in this phase number of chromosomes is also doubled V. Centrioles replicate in this phase VI. Amount of DNA changes from 2C to 4C VII. It is pre G_(2) and post G_(1) phase

    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.

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