In a Transformation Experiment in the Bacterium Streptococcus, the Donor

question 28

Multiple Choice

In a transformation experiment in the bacterium Streptococcus, the donor has the genotype d⁺e⁺f⁺ (order is not known) . The recipient strain is d^-e^-f^- and f⁺ transformants are selected for. The complete genotype is determined for each of the f⁺ transformants and the results are shown below. What is the cotransformation frequency between f and e? $\begin{array} { l c } Genotype&Number~ of ~transformants\\\\a ^ { + } e ^ { + } f ^ { + } & 25 \\ a ^ { + } e ^ { - f ^ { + } } & 4 \\ a ^ { - } e ^ { + } f ^ { + } & 80 \\ a ^ { - } e ^ { - } f ^ { + } & 256 \end{array}$

• A) 28.8%
• B) 71.2%
• C) 7.9%
• D) 23.0%
• E) 40.6%

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Definitions:

FIFO Method

"First In, First Out," an inventory valuation method where the oldest inventory items are recorded as sold first.

Weighted Average Method

A computation that considers the different levels of significance of the numbers within a dataset.

Work in Progress

Inventory representing partially completed goods which require further work before they are ready for sale.

Equivalent Units

A metric used in cost accounting to express the work done on partially finished goods as an equivalent number of fully completed units.