Measurements of the amount of DNA per nucleus were taken on a large number of cells from a growing fungus.The measure of DNA levels ranged from three to six picograms per nucleus.One nucleus had five picograms of DNA.What stage of the cell cycle was the nucleus in? A) G₀ B) G₁ C) S D) G₂ E) M

Question

Quizplus · Accepted Answer

The range of DNA levels (3-6 picograms) suggests that the cells are likely in the interphase stage, as opposed to the M phase where DNA levels are typically doubled. The fact that the nucleus in question has 5 picograms of DNA suggests it is in the S phase, where DNA synthesis occurs and DNA levels typically increase. Therefore, answer choice C (S) is the best choice.

Measurements of the Amount of DNA Per Nucleus Were Taken