Scientists Know That the Oncogene ErB-2 Over Produces a Growth

question 42

Multiple Choice

Scientists know that the oncogene erB-2 over produces a growth factor and causes all breast cancers.

• A) False. Unfortunately, this is the known cause of only about 30% of breast cancers.
• B) True. And the drug herceptin stops it.
• C) False. The oncogene erB-2 suppresses cell division.
• D) True. erB-2 is the most commonly mutated gene in women.
• E) False. Scientists don't yet know what causes any breast cancers.

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Definitions:

Fixed-Action Pattern

A fixed-action pattern is a sequence of unlearned, innate behaviors that is triggered by a specific stimulus and is carried to completion once started.

Egg Rolling

A traditional activity in which eggs are rolled on the ground, often associated with Easter celebrations.

Learning

Relatively permanent change in an animal’s behavior that results from practice and experience.

Behavior

Observable, coordinated responses to environmental stimuli.