Which of the Following Is the Best Example of How

question 12

Multiple Choice

Which of the following is the best example of how diseases have been powerful selective agents for humans,particularly before the arrival of modern medicine?

• A) Smallpox, which appeared after people and animals started living together, has worked as a selective agent against people with sickle-cell anemia.
• B) Blood type A individuals are more prone to stomach and cervical cancer. Since these diseases usually occur after reproduction has ended, they are particularly powerful agents in adaptation and evolution through natural selection.
• C) Blood type O will soon become something of the past, since it does not confer an advantage to any disease.
• D) Smallpox, which appeared after people and animals started living together, has worked as a selective agent for people with blood types B and O who have an ability to produce antibodies against smallpox.
• E) Diseases no longer work as powerful selective agents for humans, thanks to the widespread availability of modern medicine.

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Definitions:

Deepest Stage

Often referring to the fourth stage of non-REM sleep, characterized by slow brain waves and the deepest level of sleep, crucial for restorative functions.

Right Brain Hemisphere

Refers to the hemisphere of the brain that is traditionally associated with creative tasks, intuition, arts, and holistic thinking.

Brain Locations

Specific areas within the brain that are associated with particular functions or activities.

Brain Injuries

Damage to the brain caused by external physical force, potentially leading to temporary or permanent impairment of cognitive, physical, and psychosocial functions.