In Tissue from the Intestinal Epithelium of a Frog, the Following

question 12

Multiple Choice

In tissue from the intestinal epithelium of a frog, the following proportions of cells were found at each stage of the cell cycle: $$\begin{array} { | l | c | } \hline \text { Stage } & \text { Prop ortion of Cells } \\\hline \text { Interphase } & 0.90 \\\hline \text { Prophase } & 0.04 \\\hline \text { Prometaphase } & 0.02 \\\text { Metaphase } & 0.01 \\\text { Anaphase } & 0.02 \\\text { Telophase } & 0.01\end{array}$$ If the entire cell cycle in frog epithelium cells requires 20 hours for completion, what is the average duration of each stage?

• A) 18 hours for interphase, 0.4 hour for prophase, 0.2 hour for prometaphase, 0.2 hour for metaphase, 0.2 hour for anaphase, 0.4 hour for telophase
• B) 1.8 hours for interphase, 0.8 hour for prophase, 0.2 hour for prometaphase, 0.2 hour for metaphase, 0.2 hour for anaphase, 0.8 hour for telophase
• C) 18 hours for interphase, 0.8 hour for prophase, 0.4 hour for prometaphase, 0.2 hour for metaphase, 0.4 hour for anaphase, 0.2 hour for telophase
• D) 9 hours for interphase, 0.8 hour for prophase, 0.2 hour for prometaphase, 0.2 hour for metaphase, 0.6 hour for anaphase, 0.4 hour for telophase
• E) 18 hours for interphase, 0.8 hour for prophase, 0.6 hour for prometaphase, 0.2 hour for metaphase, 0.2 hour for anaphase, 0.8 hour for telophase

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Definitions:

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