Cancer is the _____ cause of death in America
a. leading c. third leading
b. second leading d. fourth leading
B
Psychology
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Behavior geneticists can trace mutations in artificial selection studies by means of _____________, genetically inactive sequences of a chromosome that occur predictably with nearby genes
Fill in the blank(s) with the appropriate word(s)
Psychology
The independent variable manipulated by Tryon in his artificial selection studies of maze running by rats was
Psychology