Which of the following makes it difficult to make causal interpretations of experimental results?
A) independent variables
B) dependent variables
C) constant variables
D) confounded variables
E) none of the above
Question 2
In a well-designed experiment, there is only one systematic difference between the conditions. This difference is manipulated by the experimenter and is called the
A) between-subject variable.
B) within-subject variable.
C) dependent variable.
D) independent variable.
E) confounded variable.
The use of bacteria to make human insulin
Aneurysm. Photograph of the aorta, the large blood vessel arising from the heart, with a large bulge
Medicinal leeches on a patient’s neck. Today leeches are sometimes used in microsurgery to prevent b
Results of a cross involving two genes located on the same chromosome
Results of the serial dilution technique and subsequent culture of bacteria
Meiosis is used to make sperm and egg cells. A shows a simplified version and B shows a detailed ver