The drug thalidomide, which caused stunting or missing limbs because it stopped development of arms and legs between 20 and 36 days after fertilization, illustrates that __________.
A. the embryonic period is a sensitive period for development of basic bodily structures
B. all drugs are harmful to the development of the embryo
C. the fetal period is a more sensitive period for body structure development than the embryonic period
D. developmental errors can occur at any point in the prenatal period
Answer: A
You might also like to view...
One notable success in the U.S. war on drugs has been the lowered availability and higher street price of cocaine
a. True b. False Indicate whether the statement is true or false
A threat to external validity is an explanation of how making a generalization might be wrong
a. True b. False Indicate whether the statement is true or false
The sympathetic nervous system
A. increases heart rate and respiration. B. decreases digestion activity. C. both increases heart rate/respiration and decreases digestion. D. neither increases heart rate and respiration nor decreases digestion.
In a research study, the dependent variable is
a. assumed to influence the other variables. b. measured by the researcher(s). c. involved in standardizing the meaning of concepts. d. involved in maintaining objectivity by avoiding bias. e. manipulated by the researcher.