Rous Sarcoma Virus Was Identified When a Scientist Discovered That

question 2

Multiple Choice

Rous sarcoma virus was identified when a scientist discovered that a virus passing between chickens was causing their tumors.The genome of this retrovirus includes the src gene, which encodes a tyrosine kinase that functions in signaling pathways leading to proliferation.The src gene is a

• A)cyclin.
• B)proto-oncogene.
• C)reverse transcriptase.
• D)tumor-suppressor gene.

---

Definitions:

Industrial-Medical Revolution

A period marked by significant advancements in medical technology and industrial practices, impacting health care delivery and public health.

Air Pollution

The presence of substances in the atmosphere that are harmful to the health of humans and other living beings or cause damage to the climate or to materials.

Groundwater Depletion

The lowering of groundwater levels due to excessive extraction, often for agricultural, industrial, and domestic use.

Shifting Cultivation

A traditional farming practice where land is cultivated temporarily then left to regenerate for a period before being used again, often involving clearing forest land.