A Researcher Has Arrived at a Method to Prevent Gene

question 25

Multiple Choice

A researcher has arrived at a method to prevent gene expression from Drosophila embryonic genes. The following questions assume that he is using this method.
-The researcher continues to study the reactions of the embryo to these new proteins and you hypothesize that he is most likely to see which of the following (while embryonic genes are still not being expressed) ?

• A) The cells begin to differentiate.
• B) The proteins are evenly distributed throughout the embryo.
• C) Larval features begin to make their appearance.
• D) Spatial axes (anterior → posterior, etc.) begin to be determined.
• E) The embryo begins to lose cells due to apoptosis from no further gene expression.

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Definitions:

Learning Curve

The concept that people improve efficiency and decrease cost over time as they gain experience in a particular task or operation.

Marginal Productivity

The additional output that is produced by using one more unit of a particular input while keeping other inputs constant.

Marginal Cost

The additional expense incurred from producing and selling one more unit of a good or service.

Profits

The financial gain realized when the amount earned from a business activity exceeds the expenses, costs, and taxes involved in sustaining the activity.