BIS104_F10_Quiz2_SampleQs

BIS104_F10_Quiz2_SampleQs - BIS 104_F10_Quiz2_SampleQs...

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BIS 104_F10_Quiz2_SampleQs 11/12/10 N u m b e r o f c l s 0 2 3 1 Fig. 1 2n 4n Relative amount of DNA 1. You measured the DNA content of cells in an actively dividing culture with a fluorescence- activated cell sorter (FACS). After FACS analysis, you obtained the data shown in Fig. 1. Areas 1, 2 and 3 represent cells in which cell cycle phase, respectively? A. Area 1: G1 phase Area 2: S phase Area 3: G2 phase B. Area 1: G1 phase Area 2: S phase Area 3: G2 and M phases C. Area 1: G1 phase Area 2: S phase Area 3: M phase D. Area 1: S phase E. Area 1: G1 and M phases Area 2: G1 phase Area 2: S phase Area 3: G2 and M phases Area 3: G2 phase 2. Lee Hartwell isolated ~40 different cdc mutants in budding yeast. A. cdc stands for “cell defective in cycle”. B. Those cdc mutants can divide only at permissive temperature (36 o C) but not at restrictive temperature (25 o C). C. Those cdc mutants all fail to initiate S phase at restrictive temperature.
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BIS104_F10_Quiz2_SampleQs - BIS 104_F10_Quiz2_SampleQs...

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