Fruit Flies Are Either "Rovers" That Move Rapidly Over a Surface

question 8

Multiple Choice

Fruit flies are either "rovers" that move rapidly over a surface looking for food or "sitters" that move slowly over a surface.When a rover and a sitter are mated,all of the offspring are rovers.When two of these offspring are mated,75 percent of the offspring are rovers and 25 percent of the offspring are sitters.This suggests that

• A) fruit flies are very efficient at learning how to forage food from their parents.
• B) food-foraging behavior in fruit flies is regulated by a gene.
• C) food foraging is an imprinted behavior.
• D) food foraging is a form of communication.

---

Definitions:

Real Exchange Rate

The rate at which the goods and services of one country can be exchanged for the goods and services of another, adjusted for inflation.

Net Exports

The value of a country's total exports minus its total imports, representing the net effect of a country's international trade on its economic output.

Government Budget Deficit

The financial situation that occurs when a government's expenditures exceed its revenues, leading to a shortfall that must be financed through borrowing.

Loanable Funds

The total amount of funds available for borrowing in the financial markets, determined by the saving behavior and the monetary policy.