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:

Behind Bars

A phrase meaning to be imprisoned or incarcerated.

Mild Sanctions

Penalties or measures that are not severe or harsh, intended to enforce compliance with laws or regulations without causing significant harm or distress.

Ostracism

The deliberate exclusion of an individual or group from social interaction, communication, or involvement in a community.

Non-Normative Behavior

Actions or behaviors that do not conform to the norms or values held by most members of a society or cultural group.