Question

the dna content of a cell is determined immediately following mitosis and cytokinesis and is found to have 8 picograms of dna per in its nucleus. how many picograms of dna would be found in that cells nucleus at the end of the following s phase? at the end of the following g2 phase? 16;16 8;8 8;16 16;8 12;16

Explanation:

Step1: Understanding the cell cycle phases

After mitosis and cytokinesis, the cell is in \(G_1\) phase with \(8\) picograms of DNA ( \(2n\) amount, where \(n\) represents the haploid amount of DNA for the cell - here \(n = 8\)). In the \(S\) phase, DNA replication occurs. The formula for DNA content after \(S\) phase is \(2n\times2\) (since DNA replicates). So, \(8\times2=16\) picograms.

Step2: DNA content in \(G_2\) phase

The \(G_2\) phase follows the \(S\) phase. In \(G_2\), there is no further DNA synthesis. The cell has already completed DNA replication in the \(S\) phase. So the DNA content remains the same as at the end of \(S\) phase, which is \(16\) picograms.

Answer:

16; 16