"With Genetically Different Animals, There's Always the Possibility That the Results

question 2

Multiple Choice

"With genetically different animals, there's always the possibility that the results of experiments are due to variations among animals rather than to whatever is being tested. Genetically identical research animals would therefore be a boon to research because scientists could be more confident of their research results." Which of the following best states the primary issue discussed in the passage?

• A)whether scientists need to be more confident of their research results
• B)whether genetically identical research animals would be a boon to research
• C)whether results of experiments are due to variations among animals or to whatever is being tested
• D)whether experimentation on animals should continue

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Definitions:

Selective Serotonin Reuptake Inhibitors

A class of drugs commonly used to treat depression and anxiety disorders by increasing the levels of serotonin in the brain.

Regression Toward the Mean

A statistical phenomenon that results when unusually large or small measurements tend to be followed by measurements that are closer to the average.

Control Groups

Groups in experimental research that do not receive the experimental treatment and are used as a benchmark to measure how the other tested subjects do.

Placebo Effects

Positive changes in health perceived after taking a treatment with no therapeutic effect, attributed to the individual's belief in the treatment's efficacy.