The discovery that a single gene called fruitless (fru) is necessary for courtship behavior in male fruit flies was the result of _______ experiments.
A) selective breeding
B) gene knockout
C) deprivation
D) imprinting
E) interbreeding

Question

Quizplus · Accepted Answer

The discovery that the fruitless (fru) gene is necessary for male courtship behavior was made through gene knockout experiments. Gene knockout involves removing (or "knocking out") a particular gene from an organism's genome to observe the effects on behavior or physiology. In this case, when the fru gene was knocked out in male fruit flies, they no longer exhibited normal courtship behavior.

The Discovery That a Single Gene Called Fruitless (Fru) Is