A Small Drug Company Is Testing a New Drug on Pregnant

question 4

Multiple Choice

A small drug company is testing a new drug on pregnant mice.When the drug is given at 8 days of gestation,anencephaly occurs,but when given at 10 days,cleft palate occurs.What is the most likely explanation for this difference?

• A) Critical sensitive period differs for the two organs.
• B) Gene-environmental interactions differ for the two organs.
• C) Critical dose differs for the two organs.
• D) The genetic constitutions of the mice differ, accounting for different defects.
• E) Too high a dose was administered.
• F) Too low a dose was administered.

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Definitions:

Theory

A system of ideas intended to explain something, based on general principles independent of the thing to be explained.

Sociohistorical Context

The intersection of social and historical factors that influence the conditions or events being studied or observed.

Hypothesis

A proposed explanation for a phenomenon, set forth as a starting point for further investigation.

Eclectic Approach

A method that combines multiple theories, styles, or ideas to derive new conclusions or solutions.