Initial Studies of the Influenza a Virus by Walter Fitch

question 22

Multiple Choice

Initial studies of the influenza A virus by Walter Fitch and colleagues showed that ________.

• A) influenza A actually has DNA as its genetic material
• B) selection is causing influenza A to become more virulent over time
• C) selection by the immune system drives change in hemagglutinin's antigenic sites
• D) protein evolution in influenza A is consistent with the neutral theory
• E) flu strains from one host cannot exchange genetic material with strains from another

---

Definitions:

Ford Motor

An American multinational automaker that has its main headquarters in Dearborn, Michigan, known for pioneering large-scale manufacturing of cars.

Monopolistic Competition

A market structure characterized by the presence of many firms that sell similar but not identical products, allowing for slight differentiation among products.

Legal Assistance

Professional legal support and services provided to individuals or organizations, often to help navigate legal issues or disputes.

Homogeneous Oligopoly

An oligopoly in which firms produce a standardized product.