Natural Selection Can Only Occur When Individuals Within a Population

question 2

Multiple Choice

Natural selection can only occur when individuals within a population vary because

• A) variations are shuffled through populations and the larger the population the more possible variations.
• B) a small isolated population reduces the variation.
• C) genetic change requires a large amount of genetic input.
• D) all the above.

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Definitions:

Africa

The world's second-largest and second-most populous continent, known for its rich cultural heritage, diverse ecosystems, and varied geography.

HIV-1

The most common and infectious subtype of the Human Immunodeficiency Virus, causing acquired immunodeficiency syndrome (AIDS) by attacking the immune system.

Acquired Immune Deficiency Syndrome

A life-threatening condition caused by the human immunodeficiency virus (HIV) that severely damages the immune system.

Human Immunodeficiency Virus

A virus that attacks the immune system, the body's natural defense against illness, and can lead to AIDS if not treated.