AP BIOLOGY

EVOLUTION

DARWIN’S THEORY OF NATURAL SELECTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
According to Darwin’s theory of natural selection, the individuals that tend to survive are those that have ____
A
variations best suited to the environment.
B
the ability to change their bodies to fit the environment.
C
the best luck.
D
the biggest body.
Explanation: 

Detailed explanation-1: -This variation means that some individuals have traits better suited to the environment than others. Individuals with adaptive traits-traits that give them some advantage-are more likely to survive and reproduce. These individuals then pass the adaptive traits on to their offspring.

Detailed explanation-2: -Natural selection is an inevitable outcome of three principles: most characteristics are inherited, more offspring are produced than are able to survive, and offspring with more favorable characteristics will survive and have more offspring than those individuals with less favorable traits.

Detailed explanation-3: -The environment creates selective pressure that is one of the driving factors in natural selection. Changes in the environment allow for some organisms to survive better than others within a species.

Detailed explanation-4: -Social Darwinists believe in “survival of the fittest”-the idea that certain people become powerful in society because they are innately better. Social Darwinism has been used to justify imperialism, racism, eugenics and social inequality at various times over the past century and a half.

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