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.
Using the Ti plasmid and Agrobacterium tumefaciens to make transgenic plants
The platypus is very difficult to spot even on the surface of a river.
Monitoring and Following Up on Laboratory Test Results
The F1 and F2 results of crosses Sturtevant
Experimental evidence of cytoplasmic localization in an amphibian oocyte.
Experimental evidence of cytoplasmic localization in an amphibian oocyte.