Fossils
This is the remains or evidence of a living organism from long ago.
What is a fossil?
Darwin traveled on this ship.
What is the HMS Beagle?
There are this many types of adaptations.
What is three?
The study of similarities and differences in body structures.
What is comparative anatomy?
The study of embryos.
What is embryology?
The bottom rock layers are the ______.
What are the oldest?
A slight inherited difference in a species is called this.
What is variation?
Migration is this type of adaptation.
What is behavorial?
Similar structure but different function.
What are homologous structures?
The more similar the DNA, the ______ the relationship.
What is closer?
This type of fossil forms when minerals replace the original material.
What is mineralization?
The process where organisms with helpful traits survive and reproduce more.
What is natural selection?
Venom is this type of adaptation.
What is functional?
Same function but different structure.
What are analogous structures?
All living things share this basic building block.
What is DNA?
A preserved footprint is this type of fossil.
What is a trace fossil?
Food was a ______ resource on the islands.
What is a limiting resource?
Thick fur is this type of adaptation.
What is structural?
These structures have lost their original function.
What are vestigial structures?
This fossil shows traits from two different groups.
What is a transitional fossil?
This dating method measures unstable and stable isotopes.
What is absolute-age dating?
The long neck of tortoises is an example of this.
What is an adapatation?
When humans choose traits in organisms, it is called this.
What is selective breeding (artificial selection)?
Dolphin fin and human arm are an example of this.
What are homologous structures?
Explain why homologous structures are strong evidence for evolution.
Because similar structures suggest species share a common ancestor.