Evidence for Evolution

Front

What are vestigial structures?

Back

Vestigial structures are body parts that have lost their original function through evolution. Examples include the human appendix and tonsils.

Front

What is a common ancestor?

Back

A common ancestor is the most recent ancestral form or species from which two different species evolved.

Front

What are some examples of vestigial structures in humans?

Back

Examples include the appendix, tonsils, wisdom teeth, and the coccyx (tailbone).

Front

How do mammal embryos compare to reptiles and birds in the third embryonic stage?

Back

Mammal embryos have more characteristics in common with each other than with reptiles or birds.

Front

What does the similarity of bones in different organisms suggest?

Back

The similarity of bones suggests that the organisms may have developed from a common ancestor.

Front

What is the significance of the appendix in humans?

Back

The appendix is a vestigial structure that can be removed without affecting a person's quality of life.

Front

What role do tonsils play in the human body?

Back

Tonsils are part of the immune system and help fight infections, but they are considered vestigial as they can be removed without major consequences.

Front

What is the evolutionary significance of embryonic development?

Back

Embryonic development shows similarities among different species, indicating common ancestry and evolutionary relationships.

Front

What are some characteristics of vestigial structures?

Back

Vestigial structures are often reduced in size, have no significant function, and provide evidence of evolutionary history.

Front

How can fossils provide evidence for evolution?

Back

Fossils can show transitional forms and changes in species over time, supporting the theory of evolution.