The mass of DNA per nucleus in a certain fungus ranges from 4 to 10 picograms. Nuclei with 5 picograms of DNA are most likely derived from cells in which of the following parts of the cell cycle?
A) G1
B) late S
C) G2
D) early M

Question

Quizplus · Accepted Answer

Nuclei with 5 picograms of DNA are most likely in the G1 phase of the cell cycle, where the cell has a normal, unreplicated set of chromosomes. The range of 4 to 10 picograms suggests that the DNA content doubles during the S phase, reaching its peak in G2 and early M phase before cell division.

The Mass of DNA Per Nucleus in a Certain Fungus