Evolution Norris 8th

Front

What are homologous structures?

Back

Structures in different species that are similar due to shared ancestry, indicating evolutionary relationships.

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What are vestigial structures?

Back

Features present in modern organisms that are no longer in use, such as the hind leg bones in whales.

Front

What is evolution?

Back

The process of change in the heritable characteristics of biological populations over successive generations.

Front

What type of evidence for evolution do fossils provide?

Back

Fossils provide evidence of past life forms and how they have changed over time.

Front

What is the significance of DNA in evolution?

Back

DNA provides genetic evidence that can show how closely related different species are.

Front

What is embryology in the context of evolution?

Back

The study of embryos which can show similarities between different species during early development.

Front

What are analogous structures?

Back

Structures in different species that serve similar functions but do not share a common ancestry.

Front

What is natural selection?

Back

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

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What is adaptation?

Back

A trait that helps an organism survive and reproduce in its environment.

Front

What is the best definition of 'change over time' in evolution?

Back

It refers to the gradual process by which species evolve and adapt to their environments.