Why Was a Version of Rous's Virus That Did Not

question 12

Multiple Choice

Why was a version of Rous's virus that did not cause cancer important to our understanding of how viruses cause cancer?

• A) This discovery showed that viruses do not actually cause cancer.
• B) The existence of another version of the virus proved that viruses also cause cancer in humans.
• C) The genes in the newly discovered virus were the first known tumor suppressor genes.
• D) Comparison of the different versions of the virus indicated which genes in the virus caused cancer.

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Definitions:

Secondary Market

A market where investors buy and sell securities they already own, typically through a brokerage.

Primary Market

The market where new securities are issued and bought directly from the issuing company, facilitating capital raising.

Auction Market

A marketplace where buyers and sellers enter bids and offers simultaneously; prices are determined through direct interaction of supply and demand.

Dealer Market

A financial market mechanism in which dealers buy and sell securities for their own accounts.