Evolution

Front

What is stabilizing selection?

Back

A type of natural selection where individuals with intermediate traits are favored, leading to a reduction in variation.

Front

What evidence do homologous structures provide?

Back

They indicate a common ancestor among different species.

Front

What is the significance of comparative embryology in evolution?

Back

It shows similarities in the embryonic development of different species, suggesting a common ancestry.

Front

How does evolution occur according to the theory of natural selection?

Back

Through small changes that accumulate over many generations.

Front

What are vestigial structures?

Back

Body parts that have lost their original function through evolution, such as the human appendix.

Front

What is adaptive radiation?

Back

The process by which a single ancestor species rapidly diversifies into a wide variety of forms to adapt to different environments.

Front

Define homologous structures with an example.

Back

Structures that are similar in different species due to shared ancestry, such as the forelimbs of humans and whales.

Front

What is the role of mutations in evolution?

Back

Mutations introduce new genetic variations, which can lead to new traits that may be beneficial for survival.

Front

Explain the concept of natural selection.

Back

The process where organisms better adapted to their environment tend to survive and produce more offspring.

Front

What is the difference between directional selection and disruptive selection?

Back

Directional selection favors one extreme phenotype, while disruptive selection favors both extreme phenotypes over intermediate ones.