Evidence of Evolution Flashcard

Front

What is the significance of the fossil record in studying evolution?

Back

It provides direct evidence of organisms that lived millions of years ago.

Front

Homologous structures

Back

Structures in different species that are similar because of common ancestry.

Front

Which of the following is an example of a vestigial structure?

• The beak of a bird.
• The wings of a bat.
• The appendix in humans.
• The tail of a monkey.

Back

The appendix in humans.

Front

Fossil records show a progression from simple to more complex organisms. What does this suggest about the theory of evolution?

Back

Gradual change and increasing complexity over time.

Front

Why are homologous structures considered evidence for common ancestry?

Back

Because they indicate that different species have structures that are similar in position and structure but may differ in function.

Front

What best describes vestigial structures?

Back

Structures that have lost all or most of their original function in the course of evolution.

Front

Comparative embryology provides evidence for evolution because it shows that:

Back

Embryos of different species pass through similar stages, suggesting a common ancestry.

Front

The study of biogeography can help explain:

Back

How species have spread and adapted to different environments over time.

Front

What is the role of DNA in the study of evolution?

Back

It reveals the genetic similarities and differences between species, suggesting common ancestry.

Front

What does the presence of similar structures in different species suggest?

Back

These species share a common ancestor.