Evidence of Evolution

Homologous structures are anatomical features in different species that share a common ancestry, indicating evolutionary relationships.

DNA is used to find common proteins and amino acids, helping scientists determine how closely related different species are.

It indicates that the organisms are closely related and likely share a recent common ancestor.

The bottom layer is usually the oldest, as sedimentary rock layers are deposited over time.

Variation refers to the differences in physical traits among individuals of the same species.

Vestigial structures are remnants of organs or structures that had a function in an early ancestor but are no longer useful in the current organism.

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

Adaptation is a trait that helps an organism survive and reproduce in its environment.

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

Homologous structures indicate common ancestry and evolutionary relationships among different species.