Evidence of Evolution

Front

What is the youngest layer in geological strata?

Back

The youngest layer is the topmost layer, which is typically labeled as layer 1.

Front

What is the study of embryos of various organisms that shows a common ancestor due to similarities in development?

Back

Embryology.

Front

What are structures that have the same parts but different functions, suggesting a common ancestry?

Back

Homologous structures.

Front

How do fossils provide evidence for evolution?

Back

Fossils show how life forms present today are different from those in the past.

Front

What term describes the changes of species over time?

Back

Evolution.

Front

What is the significance of transitional fossils in the study of evolution?

Back

Transitional fossils provide evidence of the gradual changes that occur in species over time.

Front

What is the concept of natural selection?

Back

Natural selection is the process by which organisms better adapted to their environment tend to survive and produce more offspring.

Front

What is the difference between homologous and analogous structures?

Back

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

Front

What is the role of genetic variation in evolution?

Back

Genetic variation is essential for natural selection, as it provides the raw material for evolution.

Front

What evidence do comparative anatomy and molecular biology provide for evolution?

Back

They show similarities in structure and genetic makeup among different species, indicating common ancestry.