(Q4) LS - Evidence of Evolution

Front

What are homologous structures?

Back

Features in different organisms that share a common ancestor but have different functions.

Front

What does Darwin's theory of evolution suggest?

Back

Species change over time.

Front

What is a vestigial structure?

Back

A structure that has lost most or all of its original function in a species.

Front

Give an example of a vestigial structure in humans.

Back

Tailbone.

Front

What is natural selection?

Back

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

Front

What is a common ancestor?

Back

An ancestral species from which multiple species have evolved.

Front

What is the significance of fossil evidence in evolution?

Back

Fossils provide evidence of how species have changed over time and can show transitional forms.

Front

What is adaptation?

Back

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

Front

What is the difference between homologous and analogous structures?

Back

Homologous structures share a common ancestry, while analogous structures have similar functions but do not share a common ancestor.

Front

What is speciation?

Back

The process by which new species arise from existing species.