The regulatory gene fruitless (fru) affects nearly every aspect of courtship behavior in fruit flies by
A) altering the structures of nearly 90% of the fly's nervous system.
B) influencing the number of potassium channels in nerve cells.
C) producing white eyes rather than red.
D) responding to the number of X chromosomes present.

Question

Quizplus · Accepted Answer

The fruitless (fru) gene is involved in sex-specific behaviors and is regulated by the number of X chromosomes, affecting male courtship behavior in fruit flies.

The Regulatory Gene Fruitless (Fru) Affects Nearly Every Aspect of Courtship