MMSC490 Exam 3 (Already Passed!)

The length of time it takes for the cells labeled during DNA synthesis to begin to enter mitosis is a good estimate of the length of the _______ phase(s). a. G1 b. S c. G2 d. M correct answers c. G2 In a typical cycling mammalian cell, _______ of the cell cycle is spent in interphase. a. 99% b. 95% c. 75% d. 50% correct answers b. 95% The number of cells in the different phases of a population can be determined most easily by using a(n) _______ to measure the amount of DNA per cell in a large sample of cells. a. scintillation counter b. flow cytometer c. fluorescence microscope d. phase-contrast microscope after autoradiography correct answers b. flow cytometer Which of the following represents the amount of DNA in a typical G2 cell? a. n b. 2n c. 4n d. 8n correct answers c. 4n