A Transformation Experiment Is Performed with a Donor Strain That

question 11

Multiple Choice

A transformation experiment is performed with a donor strain that is resistant to four drugs, A, B, C, and D, determined by genes A, B, C, and D. The recipient strain is sensitive to all four drugs. The treated recipient-cell population is divided up and plated on media containing various combinations of the drugs. A cell that is resistant to the added drug(s) will form a colony. The table below shows the results. $$\begin{array} { l l l l } \text { Drug(s) Added } & \text { Number of Colonies } & \text { Drug(s) Added } & \text { Number of Colonies } \\\hline \text { None } & 10,000 & \mathrm { BC } & 51 \\\text { A } & 1,156 & \mathrm { BD } & 49 \\\text { B } & 1,148 & \mathrm { CD } & 786 \\\text { C } & 1,161 & \mathrm { ABC } & 30 \\\text { D } & 1,139 & \mathrm { ABD } & 42 \\\text { AB } & 46 & \mathrm { ACD } & 630 \\\text { AC } & 640 & \mathrm { BCD } & 36 \\\text { AD } & 942 & \text { ABCD } & 30\end{array}$$ One of the genes is quite distant from the other three that are tightly linked. What is the probable order of the three tightly linked genes?

• A) DAC
• B) ACB
• C) BDC
• D) DCA
• E) ADC

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Definitions:

Quantity Equation

An equation that relates the quantity of money in an economy to the level of economic activity, typically framed as MV = PQ.

Price Level

A gauge for the typical prices of products and services in an economy at a certain time.

Batch Process

A manufacturing process where materials or products are produced in groups or quantities within a specified timeframe.

Continuous Process

A production process that operates without interruption for extended periods, commonly used in chemical and energy industries.