Chapter 8 Evolution 2024-2025

Front

What is natural selection?

Back

Natural selection is a mechanism of evolution where organisms better adapted to their environment tend to survive and produce more offspring.

Front

What is a result of natural selection?

Back

Organisms are better adapted to their environment.

Front

Which process is NOT an example of natural selection?

Back

Selective breeding by humans, such as breeding hamsters.

Front

What does zero population growth mean?

Back

It means the number of individuals in a population remains stable, with births equaling deaths.

Front

What supports the conclusion of zero population growth in mice in 1980?

Back

The death rate of mice was greater than the birth rate in 1980.

Front

What is the significance of the humerus bone in vertebrates?

Back

The presence of the humerus bone in all four vertebrates suggests they evolved from a common ancestor.

Front

What is fitness in the context of evolution?

Back

Fitness refers to the ability of an organism to survive and reproduce in its specific environment.

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What is convergent evolution?

Back

Convergent evolution is the process where organisms from different evolutionary backgrounds develop similar traits.

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What is a vestigial structure?

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A vestigial structure is a body part that has lost its original function through evolution.

Front

What is genetic diversity?

Back

Genetic diversity refers to the total number of genetic characteristics in the genetic makeup of a species.